[Perf] Linux/x64: 89 Regressions on 1/15/2023 6:48:05 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Text.Json.Tests.Perf_Basic

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteBasicUtf16 - Duration of single invocation	2.29 μs	3.73 μs	1.63	0.07	False
WriteBasicUtf16 - Duration of single invocation	4.40 ms	13.33 ms	3.03	0.30	False
WriteBasicUtf8 - Duration of single invocation	4.21 ms	13.45 ms	3.19	0.23	False
WriteBasicUtf8 - Duration of single invocation	4.07 ms	13.19 ms	3.24	0.26	False
WriteBasicUtf16 - Duration of single invocation	3.43 ms	12.32 ms	3.59	0.18	False
WriteBasicUtf16 - Duration of single invocation	3.25 ms	11.71 ms	3.60	0.27	False
WriteBasicUtf16 - Duration of single invocation	2.28 μs	3.55 μs	1.56	0.15	False
WriteBasicUtf8 - Duration of single invocation	2.52 μs	3.76 μs	1.49	0.18	False
WriteBasicUtf8 - Duration of single invocation	2.60 μs	3.88 μs	1.50	0.17	False
WriteBasicUtf8 - Duration of single invocation	3.46 ms	12.33 ms	3.57	0.23	False
WriteBasicUtf8 - Duration of single invocation	3.21 ms	12.33 ms	3.84	0.32	False
WriteBasicUtf16 - Duration of single invocation	1.84 μs	3.35 μs	1.81	0.14	False
WriteBasicUtf16 - Duration of single invocation	1.99 μs	3.44 μs	1.73	0.11	False
WriteBasicUtf16 - Duration of single invocation	4.53 ms	13.24 ms	2.92	0.22	False
WriteBasicUtf8 - Duration of single invocation	2.16 μs	3.53 μs	1.63	0.19	False
WriteBasicUtf8 - Duration of single invocation	2.26 μs	3.60 μs	1.60	0.15	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Basic*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: False, DataSize: 10)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.726373137656702 > 2.339712885584284.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -55.75957608252527 (T) = (0 -3698.3710038142017) / Math.Sqrt((11161.377396723037 / (47)) + (3716.61909186308 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.5926258765732908 = (2322.184423985156 - 3698.3710038142017) / 2322.184423985156 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: True, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 13.326944452380951 > 4.283454941150842.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -73.67430458258873 (T) = (0 -13159125.122852216) / Math.Sqrt((26208001847.556583 / (47)) + (145085682332.80975 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.1970527300922305 = (4116017.5429676427 - 13159125.122852216) / 4116017.5429676427 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: True, SkipValidation: False, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 13.448951851851852 > 4.491050697382812.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -148.22198316730137 (T) = (0 -13323937.586769614) / Math.Sqrt((24206837392.93751 / (47)) + (32412087922.545925 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.142679973834802 = (4239673.685421842 - 13323937.586769614) / 4239673.685421842 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: True, SkipValidation: True, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 13.18990475 > 4.283057749414062.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -166.58319266468706 (T) = (0 -13034413.539323308) / Math.Sqrt((21383529262.166504 / (47)) + (24215353816.00667 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.1790874297100125 = (4100048.780511919 - 13034413.539323308) / 4100048.780511919 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: False, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.316494729824564 > 3.6293273475721155.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -163.80594527233347 (T) = (0 -12322777.920461152) / Math.Sqrt((32411833694.681156 / (47)) + (22667099108.536156 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.6070458961732137 = (3416307.492381683 - 12322777.920461152) / 3416307.492381683 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: True, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 11.708657164285716 > 3.4184872080456734.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -130.8763701402487 (T) = (0 -11964323.024406785) / Math.Sqrt((25527344147.708004 / (47)) + (38572492357.48788 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.6447839445896695 = (3282587.721603271 - 11964323.024406785) / 3282587.721603271 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: True, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.5500444187259563 > 2.364460863189557.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -29.14167702146618 (T) = (0 -3682.4405158379764) / Math.Sqrt((13560.693877735348 / (47)) + (19508.815575675857 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.5987066755076763 = (2303.387214335989 - 3682.4405158379764) / 2303.387214335989 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: True, SkipValidation: True, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.764006425767772 > 2.653831900810398.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -62.26719580572706 (T) = (0 -3763.8181685112804) / Math.Sqrt((9793.278245818763 / (47)) + (1509.1751495343733 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.456836986760625 = (2583.5547852751756 - 3763.8181685112804) / 2583.5547852751756 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: True, SkipValidation: False, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.8813423328697487 > 2.71806926670044.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -48.05079904721472 (T) = (0 -3920.7137128565664) / Math.Sqrt((6236.831445361733 / (47)) + (5917.2917363762035 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.49223118161281226 = (2627.4170927181913 - 3920.7137128565664) / 2627.4170927181913 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.334343340000002 > 3.593613622375.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -197.80834719361954 (T) = (0 -12198790.48546896) / Math.Sqrt((20178004600.841286 / (47)) + (15525478381.809788 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.5955722908559524 = (3392725.691120772 - 12198790.48546896) / 3392725.691120772 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: True, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.325817533333332 > 3.379614874125.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -108.77767864289233 (T) = (0 -12043799.69231762) / Math.Sqrt((19692733767.839603 / (47)) + (61629953846.0067 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.741791993616287 = (3218725.0688614002 - 12043799.69231762) / 3218725.0688614002 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: True, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.345338220164609 > 1.9624233186334163.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -64.6780175307291 (T) = (0 -3331.451602785947) / Math.Sqrt((14923.461713189517 / (47)) + (1193.180653044571 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.6828599270435899 = (1979.6368962439826 - 3331.451602785947) / 1979.6368962439826 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: False, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.4378489154113137 > 2.0860121606547692.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -53.490838773448615 (T) = (0 -3450.7191231205384) / Math.Sqrt((14845.181254428067 / (47)) + (3660.9074872176116 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.6801185282766943 = (2053.85457337939 - 3450.7191231205384) / 2053.85457337939 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: False, DataSize: 100000)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 13.236444437037038 > 4.480836600351562.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -120.44696703562238 (T) = (0 -13513792.519896472) / Math.Sqrt((10534345536.299664 / (47)) + (57076858993.66991 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.1893439379022124 = (4237170.020861768 - 13513792.519896472) / 4237170.020861768 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: True, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.5260716299819967 > 2.2618400586260066.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -46.82559131454583 (T) = (0 -3560.1120954507837) / Math.Sqrt((5421.5616394292065 / (47)) + (7018.458356556954 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.6025540001168909 = (2221.523951886244 - 3560.1120954507837) / 2221.523951886244 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 10)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 3.603101388405292 > 2.3592707666324175.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -51.14885579422483 (T) = (0 -3583.3381378333543) / Math.Sqrt((6433.68927991635 / (47)) + (5157.191304774324 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.5739304047660073 = (2276.6814383804226 - 3583.3381378333543) / 2276.6814383804226 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Buffers.Text.Tests.Utf8FormatterTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
FormatterInt32 - Duration of single invocation	25.94 ns	114.87 ns	4.43	0.50	False
FormatterInt32 - Duration of single invocation	18.73 ns	110.60 ns	5.90	0.59	False
FormatterUInt64 - Duration of single invocation	27.87 ns	125.48 ns	4.50	0.36	False
FormatterInt64 - Duration of single invocation	31.59 ns	123.18 ns	3.90	0.46	False
FormatterInt32 - Duration of single invocation	27.02 ns	114.99 ns	4.26	0.51	False
FormatterDouble - Duration of single invocation	319.26 ns	752.23 ns	2.36	0.07	False
FormatterUInt32 - Duration of single invocation	24.06 ns	116.23 ns	4.83	0.50	False
FormatterUInt32 - Duration of single invocation	21.75 ns	102.71 ns	4.72	0.54	False
FormatterInt64 - Duration of single invocation	30.71 ns	120.44 ns	3.92	0.42	False
FormatterUInt64 - Duration of single invocation	17.93 ns	107.24 ns	5.98	0.52	False
FormatterDouble - Duration of single invocation	440.93 ns	863.10 ns	1.96	0.05	False
FormatterInt64 - Duration of single invocation	16.76 ns	107.35 ns	6.41	0.60	False
FormatterDouble - Duration of single invocation	452.36 ns	844.59 ns	1.87	0.05	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Text.Tests.Utf8FormatterTests*'

Payloads

Baseline
Compare

Histogram

System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt32(value: -2147483648)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 114.87223508721672 > 27.26395924548661.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -63.51728439844673 (T) = (0 -117.75203563244902) / Math.Sqrt((4.74237629793391 / (47)) + (19.727942783612598 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.479813450409282 = (26.285031047819867 - 117.75203563244902) / 26.285031047819867 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt32(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 110.60148729312229 > 19.816923594722944.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -59.41364131641975 (T) = (0 -110.63478039361982) / Math.Sqrt((2.651569632470885 / (47)) + (23.09671145723828 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -4.749002104544319 = (19.244171141660946 - 110.63478039361982) / 19.244171141660946 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterUInt64(value: 18446744073709551615)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 125.47590377619791 > 30.580242929932425.
IsChangePoint: Marked as a change because one of 11/14/2022 6:23:13 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -95.5278325390725 (T) = (0 -124.2184909810715) / Math.Sqrt((3.1876317669013674 / (47)) + (9.000773795268964 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.1082409320188726 = (30.23641822292735 - 124.2184909810715) / 30.23641822292735 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt64(value: -9223372036854775808)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 123.17608878433239 > 31.026841716731155.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -128.49144571476484 (T) = (0 -119.67008508892528) / Math.Sqrt((3.8293905951607057 / (47)) + (3.9255928326495777 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.8351611316034537 = (31.203404754702458 - 119.67008508892528) / 31.203404754702458 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt32(value: 2147483647)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 114.989134218609 > 27.552720181708406.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -111.89785335183969 (T) = (0 -111.20906847382817) / Math.Sqrt((3.123341350552145 / (47)) + (5.214806084682238 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.3767133525338675 = (25.40926478757044 - 111.20906847382817) / 25.40926478757044 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDouble(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 752.2330570695436 > 336.0079241222296.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -153.62932318768318 (T) = (0 -752.8811937205102) / Math.Sqrt((54.37617424038997 / (35)) + (140.75035511978052 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -1.35514458292492 = (319.67514826010637 - 752.8811937205102) / 319.67514826010637 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterUInt32(value: 4294967295)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 116.22826777515823 > 24.926184591803544.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -110.09247830467969 (T) = (0 -116.87677121110642) / Math.Sqrt((3.66272625212178 / (47)) + (6.271019273108482 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.7829158890176338 = (24.436300767796233 - 116.87677121110642) / 24.436300767796233 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterUInt32(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 102.70842076735568 > 21.29574248329909.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -76.22366379397913 (T) = (0 -105.68472100620909) / Math.Sqrt((3.100069746710501 / (47)) + (12.121712977633363 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -4.416812914864004 = (19.51049863956072 - 105.68472100620909) / 19.51049863956072 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt64(value: 9223372036854775807)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 120.43713831399039 > 32.77874955711116.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -96.86772204154957 (T) = (0 -123.59006584573604) / Math.Sqrt((3.6878767473348075 / (47)) + (8.345042185837364 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.9824735555986566 = (31.03349315954406 - 123.59006584573604) / 31.03349315954406 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterUInt64(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 107.23751843865946 > 18.84812119073709.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -142.54759270261556 (T) = (0 -107.05416513726247) / Math.Sqrt((1.5104120377969026 / (47)) + (3.547112553504723 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -4.820146255043779 = (18.39372422033013 - 107.05416513726247) / 18.39372422033013 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDouble(value: -1.7976931348623157E+308)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 863.0953982227619 > 452.3897345139076.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -148.75676579975917 (T) = (0 -864.7904411279097) / Math.Sqrt((48.04461567030622 / (35)) + (156.677248846466 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -1.005373257546882 = (431.23664777787263 - 864.7904411279097) / 431.23664777787263 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterInt64(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 107.34798683354656 > 19.542944063383082.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -93.74316162860899 (T) = (0 -108.1827008399705) / Math.Sqrt((5.748343128760783 / (47)) + (7.651514889557701 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -4.443967703248596 = (19.872032079730065 - 108.1827008399705) / 19.872032079730065 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDouble(value: 1.7976931348623157E+308)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 844.585520593167 > 454.1608109101877.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -148.82353269206635 (T) = (0 -862.4754863822731) / Math.Sqrt((54.62535193350432 / (35)) + (148.40481214852542 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -0.989315774358846 = (433.55383670058507 - 862.4754863822731) / 433.55383670058507 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

### Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SerializeToWriter - Duration of single invocation	29.49 μs	34.19 μs	1.16	0.02	False
SerializeToString - Duration of single invocation	41.57 μs	47.87 μs	1.15	0.02	False
SerializeObjectProperty - Duration of single invocation	43.24 μs	47.19 μs	1.09	0.01	False
SerializeToUtf8Bytes - Duration of single invocation	33.62 μs	38.36 μs	1.14	0.03	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>.SerializeToWriter(Mode: SourceGen)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 34.187489355895195 > 30.97945847857548.
IsChangePoint: Marked as a change because one of 1/11/2023 4:46:06 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -18.505983084730776 (T) = (0 -33838.20262141292) / Math.Sqrt((1063652.575502792 / (46)) + (142175.87130211407 / (10))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (46) + (10) - 2, .025) and -0.11816858837379318 = (30262.1652702885 - 33838.20262141292) / 30262.1652702885 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>.SerializeToString(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 47.86996298816569 > 43.76304124734123.
IsChangePoint: Marked as a change because one of 1/12/2023 3:42:01 AM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -13.652291160333215 (T) = (0 -46290.87842461343) / Math.Sqrt((1098398.6246388813 / (47)) + (532963.8508806849 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.08892215219313386 = (42510.7325912892 - 46290.87842461343) / 42510.7325912892 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>.SerializeObjectProperty(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 47.19476637801205 > 45.48674385663302.
IsChangePoint: Marked as a change because one of 1/12/2023 3:42:01 AM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -16.90624668309258 (T) = (0 -47669.37594847668) / Math.Sqrt((863941.7122505064 / (47)) + (273930.2014963301 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.08210920727086371 = (44052.278298880155 - 47669.37594847668) / 44052.278298880155 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<IndexViewModel>.SerializeToUtf8Bytes(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 38.357056821895426 > 35.21150054846952.
IsChangePoint: Marked as a change because one of 1/12/2023 3:42:01 AM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -19.975227241493958 (T) = (0 -38199.60838172889) / Math.Sqrt((973170.4578878641 / (47)) + (153091.070270778 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.11016995213691169 = (34408.793273678806 - 38199.60838172889) / 34408.793273678806 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Text.Json.Tests.Perf_Deep

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteDeepUtf16 - Duration of single invocation	44.26 ms	57.58 ms	1.30	0.08	False
WriteDeepUtf16 - Duration of single invocation	13.09 ms	23.74 ms	1.81	0.17	False
WriteDeepUtf8 - Duration of single invocation	43.48 ms	57.90 ms	1.33	0.10	False
WriteDeepUtf8 - Duration of single invocation	11.60 ms	23.16 ms	2.00	0.10	False
WriteDeepUtf16 - Duration of single invocation	12.77 ms	23.06 ms	1.81	0.13	False
WriteDeepUtf8 - Duration of single invocation	12.31 ms	23.06 ms	1.87	0.13	False
WriteDeepUtf8 - Duration of single invocation	43.64 ms	56.57 ms	1.30	0.10	False
WriteDeepUtf16 - Duration of single invocation	43.60 ms	56.30 ms	1.29	0.13	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Deep*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: True, SkipValidation: False)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 57.58419996666667 > 46.05168168416667.
IsChangePoint: Marked as a change because one of 11/11/2022 3:15:52 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -26.047769422352708 (T) = (0 -56623343.11392857) / Math.Sqrt((2750123994700.603 / (47)) + (1466790455174.929 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.26323201522660333 = (44824183.07279147 - 56623343.11392857) / 44824183.07279147 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: False, SkipValidation: False)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 23.73951946103896 > 13.419348159736842.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -54.34682393078653 (T) = (0 -23689137.951030303) / Math.Sqrt((409979199916.05994 / (47)) + (307929286807.6337 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.8383983652068903 = (12885747.941994263 - 23689137.951030303) / 12885747.941994263 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: True, SkipValidation: False)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 57.904634634615384 > 45.76534665499999.
IsChangePoint: Marked as a change because one of 11/11/2022 3:15:52 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -45.892810074651635 (T) = (0 -56955029.87946886) / Math.Sqrt((2377693896808.4653 / (47)) + (201975420277.44434 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.2728835055424966 = (44744887.98972606 - 56955029.87946886) / 44744887.98972606 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: False, SkipValidation: True)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 23.1605696969697 > 12.309966246666667.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -61.564473475114326 (T) = (0 -22953479.11474775) / Math.Sqrt((672170302060.2303 / (47)) + (156573887563.28458 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.8665145033236749 = (12297509.11330977 - 22953479.11474775) / 12297509.11330977 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: False, SkipValidation: True)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 23.062779220779213 > 12.457434804358975.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -39.31523094078162 (T) = (0 -23465913.059358973) / Math.Sqrt((713915390586.3358 / (47)) + (651768255638.7314 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.9046322840379537 = (12320442.773137078 - 23465913.059358973) / 12320442.773137078 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: False, SkipValidation: False)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 23.05506666060606 > 12.78939549125.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -76.21382364682168 (T) = (0 -23454476.9133643) / Math.Sqrt((633471646398.1036 / (47)) + (63663466454.816635 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.8441655360959227 = (12718205.852071803 - 23454476.9133643) / 12718205.852071803 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: True, SkipValidation: True)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 56.569428589285714 > 45.56126666041666.
IsChangePoint: Marked as a change because one of 11/11/2022 3:15:52 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -25.66833249928949 (T) = (0 -56977685.388589755) / Math.Sqrt((2244415712471.833 / (47)) + (1773616136745.1685 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.27185140284670933 = (44799011.31614903 - 56977685.388589755) / 44799011.31614903 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: True, SkipValidation: True)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 56.29966663333333 > 45.317696678333334.
IsChangePoint: Marked as a change because one of 11/11/2022 3:15:52 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -41.04888231838574 (T) = (0 -56942773.464436814) / Math.Sqrt((2665737129376.1304 / (47)) + (367715228840.16394 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.2827359395784455 = (44391656.69837731 - 56942773.464436814) / 44391656.69837731 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_SByte

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	78.31 ns	167.35 ns	2.14	0.37	False
ToString - Duration of single invocation	64.70 ns	154.05 ns	2.38	0.34	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_SByte*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_SByte.ToString(value: -128)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 167.34709928366112 > 85.32768204442331.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -59.16532604160687 (T) = (0 -171.99232169062407) / Math.Sqrt((13.95292318886822 / (47)) + (21.053121309924 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.142082214194365 = (80.29211976595876 - 171.99232169062407) / 80.29211976595876 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_SByte.ToString(value: 127)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 154.05347627008342 > 71.47262332843484.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -55.97409237634056 (T) = (0 -156.30300533197254) / Math.Sqrt((9.96034505186423 / (47)) + (22.79162177457879 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.2999892425669821 = (67.95814625529518 - 156.30300533197254) / 67.95814625529518 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_Int32

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TryFormat - Duration of single invocation	36.17 ns	117.84 ns	3.26	0.52	False
ToString - Duration of single invocation	74.09 ns	160.24 ns	2.16	0.39	False
ToString - Duration of single invocation	88.85 ns	176.53 ns	1.99	0.23	False
ToString - Duration of single invocation	82.47 ns	163.68 ns	1.98	0.28	False
TryFormat - Duration of single invocation	50.86 ns	138.66 ns	2.73	0.32	False
TryFormat - Duration of single invocation	28.76 ns	112.43 ns	3.91	0.62	False
TryFormat - Duration of single invocation	30.16 ns	122.56 ns	4.06	0.63	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int32*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Int32.TryFormat(value: 2147483647)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 117.83775781905202 > 38.0708348796134.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -45.83720950424572 (T) = (0 -123.4964007593682) / Math.Sqrt((27.51204722003688 / (47)) + (32.6337546411941 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.6785490808897836 = (33.57204105307094 - 123.4964007593682) / 33.57204105307094 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.ToString(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 160.23721225755983 > 74.74182480452627.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -109.90441065837422 (T) = (0 -159.02881540931426) / Math.Sqrt((8.434330371159191 / (47)) + (5.000113009573719 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.3237947448354979 = (68.43496645422182 - 159.02881540931426) / 68.43496645422182 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.ToString(value: -2147483648)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 176.53118228479846 > 96.343437437143.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -79.95293977854227 (T) = (0 -178.52247886945207) / Math.Sqrt((29.97435499762706 / (47)) + (6.358772148344967 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.0219682625971387 = (88.29143472318748 - 178.52247886945207) / 88.29143472318748 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.ToString(value: 2147483647)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 163.67831751538785 > 80.56296709631579.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -58.504896840840075 (T) = (0 -168.11137593276467) / Math.Sqrt((18.85375871709496 / (47)) + (21.101741474135505 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.229657237031578 = (75.39785628959604 - 168.11137593276467) / 75.39785628959604 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.TryFormat(value: -2147483648)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 138.66497564161395 > 54.78665588441773.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -65.13793589138147 (T) = (0 -139.23715870693317) / Math.Sqrt((12.048536182501708 / (47)) + (16.106261076823923 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.7717505439420886 = (50.23437589333159 - 139.23715870693317) / 50.23437589333159 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.TryFormat(value: 4)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 112.42941876551374 > 30.31280133089242.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -69.322126513896 (T) = (0 -114.17658527025337) / Math.Sqrt((10.78720307534354 / (47)) + (14.41728450587755 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.6490141802616045 = (24.55931103738396 - 114.17658527025337) / 24.55931103738396 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int32.TryFormat(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 122.56424098368427 > 30.524283836803626.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -78.2250527817508 (T) = (0 -121.29240696127154) / Math.Sqrt((7.110616212345891 / (47)) + (12.644990257833667 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.298889163572593 = (28.21482535280613 - 121.29240696127154) / 28.21482535280613 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

### Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Text.Json.Serialization.Tests.WriteJson<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SerializeToUtf8Bytes - Duration of single invocation	453.57 ns	538.97 ns	1.19	0.28	False
SerializeToString - Duration of single invocation	565.35 ns	689.48 ns	1.22	0.24	False
SerializeObjectProperty - Duration of single invocation	1.11 μs	1.21 μs	1.09	0.29	False
SerializeToWriter - Duration of single invocation	258.89 ns	360.86 ns	1.39	0.28	False
SerializeToWriter - Duration of single invocation	264.21 ns	351.02 ns	1.33	0.34	False
SerializeToUtf8Bytes - Duration of single invocation	440.47 ns	562.09 ns	1.28	0.37	False
SerializeToString - Duration of single invocation	578.16 ns	687.37 ns	1.19	0.33	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToUtf8Bytes(Mode: Reflection)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 538.9677788076856 > 473.24707253404966.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -21.748649195097826 (T) = (0 -536.9183113249503) / Math.Sqrt((416.99601939057357 / (47)) + (88.97104166547045 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.20590852621032835 = (445.2396675660487 - 536.9183113249503) / 445.2396675660487 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToString(Mode: Reflection)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 689.4828789002232 > 588.9368897288332.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -25.335587093260116 (T) = (0 -690.0240533321335) / Math.Sqrt((355.0810542198987 / (47)) + (168.4129111163578 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.22152968144509547 = (564.8852122167186 - 690.0240533321335) / 564.8852122167186 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeObjectProperty(Mode: Reflection)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 1.2112551209811069 > 1.1587608124728899.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -8.580807218401745 (T) = (0 -1251.8661786841762) / Math.Sqrt((1650.2187444337992 / (47)) + (2540.6589600589323 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.13193965256403986 = (1105.9478090095015 - 1251.8661786841762) / 1105.9478090095015 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToWriter(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 360.86485876692547 > 270.78857989691585.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -29.585369847708275 (T) = (0 -354.1113837519654) / Math.Sqrt((160.75534172073893 / (46)) + (80.06749519879585 / (10))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (46) + (10) - 2, .025) and -0.39536837371691713 = (253.77627185909338 - 354.1113837519654) / 253.77627185909338 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToWriter(Mode: Reflection)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 351.0235227303809 > 272.0537953181432.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -36.1929847496736 (T) = (0 -350.28639349495336) / Math.Sqrt((127.4034073251576 / (47)) + (39.0620261228242 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.36199704208829464 = (257.18586947727397 - 350.28639349495336) / 257.18586947727397 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToUtf8Bytes(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 562.0913550606095 > 474.46198613981306.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -22.02850154827549 (T) = (0 -545.507770755884) / Math.Sqrt((390.759360785015 / (47)) + (142.50930119949834 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.23735312165674433 = (440.86668648435676 - 545.507770755884) / 440.86668648435676 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson<Int32>.SerializeToString(Mode: SourceGen)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 687.3728757512042 > 621.5970652115378.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -16.637125895383054 (T) = (0 -697.8460413532608) / Math.Sqrt((785.7620175512266 / (47)) + (333.08444195293055 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.20282552913869847 = (580.1722897027004 - 697.8460413532608) / 580.1722897027004 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_UInt64

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	106.89 ns	170.51 ns	1.60	0.17	False
TryFormat - Duration of single invocation	58.12 ns	136.35 ns	2.35	0.27	False
TryFormat - Duration of single invocation	30.58 ns	117.82 ns	3.85	0.59	False
ToString - Duration of single invocation	71.45 ns	161.31 ns	2.26	0.31	False
TryFormat - Duration of single invocation	25.72 ns	116.61 ns	4.53	0.57	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_UInt64*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_UInt64.ToString(value: 18446744073709551615)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 170.50532114607034 > 110.41785488060448.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -39.08117559984643 (T) = (0 -173.6343015077905) / Math.Sqrt((104.81218797841395 / (47)) + (14.039074204021333 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.7515089797389546 = (99.13412007380573 - 173.6343015077905) / 99.13412007380573 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt64.TryFormat(value: 18446744073709551615)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 136.35354579517966 > 60.67980002250154.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -76.06221425292998 (T) = (0 -136.1532669408304) / Math.Sqrt((37.19255084565047 / (47)) + (3.7634544294059995 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.5231723672263775 = (53.961143800293854 - 136.1532669408304) / 53.961143800293854 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt64.TryFormat(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 117.81993442182606 > 37.3541691876266.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -76.0866539139666 (T) = (0 -119.47258689286127) / Math.Sqrt((17.09191931031085 / (47)) + (9.32898308647562 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.6385257805124898 = (32.835437784374705 - 119.47258689286127) / 32.835437784374705 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt64.ToString(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 161.31153999785977 > 73.35008088846789.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -65.47091914306957 (T) = (0 -160.34354529435603) / Math.Sqrt((11.467514784531291 / (47)) + (16.908159676880942 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.3145856355924033 = (69.27527019466581 - 160.34354529435603) / 69.27527019466581 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt64.TryFormat(value: 0)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 116.61240764635805 > 26.633669129282378.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -87.31333640106162 (T) = (0 -121.19831172642401) / Math.Sqrt((8.039849832496865 / (47)) + (10.067394182192443 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.583864054538031 = (26.44020640325001 - 121.19831172642401) / 26.44020640325001 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in MicroBenchmarks.Serializers.Json_ToString<IndexViewModel>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SystemTextJson_SourceGen_ - Duration of single invocation	41.30 μs	46.35 μs	1.12	0.03	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'MicroBenchmarks.Serializers.Json_ToString<IndexViewModel>*'

Payloads

Baseline
Compare

Histogram

MicroBenchmarks.Serializers.Json_ToString<IndexViewModel>.SystemTextJson_SourceGen_

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 46.34707097916886 > 43.63000387280976.
IsChangePoint: Marked as a change because one of 1/12/2023 3:42:01 AM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -16.336626579464475 (T) = (0 -46609.285585315534) / Math.Sqrt((1510312.129651323 / (47)) + (313230.2120030171 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.09684472160102148 = (42493.968988866334 - 46609.285585315534) / 42493.968988866334 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in PerfLabTests.LowLevelPerf

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
IntegerFormatting - Duration of single invocation	7.27 ms	15.34 ms	2.11	0.21	False
EmptyInstanceFunction - Duration of single invocation	1.77 ms	1.87 ms	1.05	0.08	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.LowLevelPerf*'

Payloads

Baseline
Compare

Histogram

PerfLabTests.LowLevelPerf.IntegerFormatting

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 15.335912495833334 > 7.6840634437499995.
IsChangePoint: Marked as a change because one of 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -93.16649979332283 (T) = (0 -15484005.004279915) / Math.Sqrt((139668535869.9826 / (47)) + (51052165967.08866 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.1774748698140465 = (7110991.368457092 - 15484005.004279915) / 7110991.368457092 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### PerfLabTests.LowLevelPerf.EmptyInstanceFunction

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 1.8658764861111112 > 1.8618599302951389.
IsChangePoint: Marked as a change because one of 11/2/2022 9:35:40 AM, 12/1/2022 7:29:59 PM, 1/9/2023 10:41:51 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -13.15981003298213 (T) = (0 -1876797.0347595534) / Math.Sqrt((5682030.8881805055 / (20)) + (2251087032.705476 / (37))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (37) - 2, .025) and -0.05799956271280831 = (1773910.9739774116 - 1876797.0347595534) / 1773910.9739774116 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_Uri

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
BuilderToString - Duration of single invocation	448.48 ns	594.22 ns	1.32	0.19	False
ParseAbsoluteUri - Duration of single invocation	821.96 ns	1.24 μs	1.51	0.06	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Uri*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Uri.BuilderToString

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 594.2151760976643 > 476.1021011166676.
IsChangePoint: Marked as a change because one of 11/23/2022 9:29:54 AM, 12/9/2022 1:52:32 PM, 1/12/2023 10:41:19 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -16.340587403018166 (T) = (0 -633.895785142069) / Math.Sqrt((791.7613294053639 / (47)) + (775.2565088785276 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.33408199092772833 = (475.1550425332211 - 633.895785142069) / 475.1550425332211 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Uri.ParseAbsoluteUri

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 1.2442189721286945 > 867.0408064474447.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -56.471157811781865 (T) = (0 -1267.2939428995774) / Math.Sqrt((801.6754285052936 / (47)) + (406.606361908973 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.5117953227163323 = (838.2708451713921 - 1267.2939428995774) / 838.2708451713921 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_Int16

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	68.74 ns	157.18 ns	2.29	0.33	False
ToString - Duration of single invocation	80.63 ns	164.79 ns	2.04	0.33	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int16*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Int16.ToString(value: 32767)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 157.17861726627862 > 71.58889576839975.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -74.07393999689582 (T) = (0 -159.6108878221922) / Math.Sqrt((17.058273796851598 / (47)) + (11.055969672937124 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.2851943695467063 = (69.84565074604696 - 159.6108878221922) / 69.84565074604696 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int16.ToString(value: -32768)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 164.79048770174217 > 86.21970242202258.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -64.04255743588102 (T) = (0 -169.2169800885403) / Math.Sqrt((7.189992912239182 / (47)) + (16.943510829597322 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.0592878171219173 = (82.1725737808908 - 169.2169800885403) / 82.1725737808908 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

### Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_Int64

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TryFormat - Duration of single invocation	57.52 ns	130.82 ns	2.27	0.28	False
ToString - Duration of single invocation	112.13 ns	188.43 ns	1.68	0.17	False
TryFormat - Duration of single invocation	69.27 ns	151.03 ns	2.18	0.36	False
ToString - Duration of single invocation	101.43 ns	172.63 ns	1.70	0.17	False
ToString - Duration of single invocation	71.11 ns	160.88 ns	2.26	0.31	False
TryFormat - Duration of single invocation	29.04 ns	116.72 ns	4.02	0.50	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int64*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Int64.TryFormat(value: 9223372036854775807)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 130.82074450380875 > 60.936145106125856.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -55.31199366548962 (T) = (0 -130.3488086944249) / Math.Sqrt((62.83310161630203 / (47)) + (6.3492340873614275 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.4743834681892174 = (52.67930794486582 - 130.3488086944249) / 52.67930794486582 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int64.ToString(value: -9223372036854775808)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 188.42616361403827 > 116.63126354469324.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -64.0809611393826 (T) = (0 -192.54450250098708) / Math.Sqrt((41.88305840917466 / (47)) + (8.410620382934859 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.7794286134756064 = (108.20580328024865 - 192.54450250098708) / 108.20580328024865 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int64.TryFormat(value: -9223372036854775808)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 151.02709891239232 > 76.40228965834588.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -64.71667276903018 (T) = (0 -154.98098121911946) / Math.Sqrt((29.654864169160405 / (47)) + (10.823675633272403 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.205482450445282 = (70.27078414876036 - 154.98098121911946) / 70.27078414876036 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int64.ToString(value: 9223372036854775807)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 172.6311028835636 > 106.51368705966361.
IsChangePoint: Marked as a change because one of 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -50.839542821104615 (T) = (0 -175.32602370805742) / Math.Sqrt((69.21566071594808 / (47)) + (8.38276774731819 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.7882981039902597 = (98.0407144182782 - 175.32602370805742) / 98.0407144182782 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int64.ToString(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 160.87569152912496 > 74.58990675824145.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -73.13251986987623 (T) = (0 -164.0535064937588) / Math.Sqrt((13.920595108368293 / (47)) + (13.150248716766157 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.3033477177042405 = (71.22394297343513 - 164.0535064937588) / 71.22394297343513 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Int64.TryFormat(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 116.71790829858257 > 32.02350067126496.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -87.12247009911837 (T) = (0 -120.33140673368874) / Math.Sqrt((6.708066992404083 / (47)) + (9.357233888477706 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.0303726564826525 = (29.856149043722223 - 120.33140673368874) / 29.856149043722223 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_UInt32

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TryFormat - Duration of single invocation	35.41 ns	120.93 ns	3.42	0.56	False
TryFormat - Duration of single invocation	32.90 ns	122.02 ns	3.71	0.56	False
ToString - Duration of single invocation	80.76 ns	156.38 ns	1.94	0.27	False
TryFormat - Duration of single invocation	26.34 ns	117.04 ns	4.44	0.57	False
ToString - Duration of single invocation	67.64 ns	157.87 ns	2.33	0.33	False
ToString - Duration of single invocation	12.79 ns	15.61 ns	1.22	0.60	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_UInt32*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_UInt32.TryFormat(value: 4294967295)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 120.93189130354308 > 38.44673797734767.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -77.49322467494126 (T) = (0 -120.20417531897574) / Math.Sqrt((35.46720892874068 / (47)) + (4.841005644511883 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -2.5400135880250247 = (33.95585139153031 - 120.20417531897574) / 33.95585139153031 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt32.TryFormat(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 122.02039897452302 > 29.23745883995795.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -75.12632471487171 (T) = (0 -120.3943377364584) / Math.Sqrt((11.602519037948564 / (47)) + (12.67740560387086 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -3.3094980057259122 = (27.936974927588718 - 120.3943377364584) / 27.936974927588718 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt32.ToString(value: 4294967295)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 156.38143571366587 > 76.368014000629.
IsChangePoint: Marked as a change because one of 12/9/2022 1:52:32 PM, 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -98.81538532774051 (T) = (0 -157.91406038198136) / Math.Sqrt((7.044066282480411 / (47)) + (5.827491609043316 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.1533358230507893 = (73.33461817314351 - 157.91406038198136) / 73.33461817314351 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt32.TryFormat(value: 0)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 117.0438945552421 > 25.93315390888599.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -194.0546300813705 (T) = (0 -117.80070355776293) / Math.Sqrt((2.9787229029151887 / (47)) + (1.7318777752106658 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -4.030662020946871 = (23.416541017317336 - 117.80070355776293) / 23.416541017317336 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt32.ToString(value: 12345)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 157.87014805742263 > 69.1389811964576.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -94.89932041706382 (T) = (0 -159.9209026508348) / Math.Sqrt((10.199265583557022 / (47)) + (7.44780343534566 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.392145944699521 = (66.85248573783092 - 159.9209026508348) / 66.85248573783092 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt32.ToString(value: 0)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 15.611319480542873 > 13.732449949028979.
IsChangePoint: Marked as a change because one of 12/2/2022 2:38:36 AM, 12/9/2022 1:52:32 PM, 1/12/2023 3:42:01 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -8.402761008193783 (T) = (0 -16.27031963171844) / Math.Sqrt((1.0466642904884056 / (32)) + (1.5184244958966282 / (25))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (25) - 2, .025) and -0.1874676334966465 = (13.701695248575707 - 16.27031963171844) / 13.701695248575707 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.IO.Tests.Perf_StreamWriter

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteFormat - Duration of single invocation	169.67 ns	271.39 ns	1.60	0.20	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_StreamWriter*'

Payloads

Baseline
Compare

Histogram

System.IO.Tests.Perf_StreamWriter.WriteFormat

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 271.3915655484739 > 184.6888124122459.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -48.936043497696275 (T) = (0 -274.20993781834443) / Math.Sqrt((42.98431431394086 / (47)) + (30.467903028791504 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -0.5508573207705861 = (176.81184087398555 - 274.20993781834443) / 176.81184087398555 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Tests.Perf_UInt16

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToString - Duration of single invocation	68.79 ns	157.34 ns	2.29	0.36	False
ToString - Duration of single invocation	67.95 ns	150.53 ns	2.22	0.40	False
ToString - Duration of single invocation	13.51 ns	15.28 ns	1.13	0.71	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_UInt16*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_UInt16.ToString(value: 12345)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 157.33922615357665 > 68.88075023666502.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -48.79948752018295 (T) = (0 -157.69946649290785) / Math.Sqrt((8.579457803567466 / (47)) + (32.57124809712854 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.3469177255352534 = (67.19428839668501 - 157.69946649290785) / 67.19428839668501 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt16.ToString(value: 65535)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 150.5283879571373 > 71.64695827919381.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -54.321844015199865 (T) = (0 -158.75336880318136) / Math.Sqrt((10.357861684844208 / (47)) + (25.694839832122884 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.3339146490473588 = (68.02021182221904 - 158.75336880318136) / 68.02021182221904 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_UInt16.ToString(value: 0)

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 15.279244931112725 > 14.361568505837845.
IsChangePoint: Marked as a change because one of 12/1/2022 11:48:13 PM, 12/9/2022 1:52:32 PM, 1/12/2023 3:42:01 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -6.675821388445311 (T) = (0 -17.50523027313581) / Math.Sqrt((1.9886960926207675 / (32)) + (6.4443118034057925 / (25))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (25) - 2, .025) and -0.27502788820437896 = (13.729292068888324 - 17.50523027313581) / 13.729292068888324 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	2eca2d319bf8d1247edf38facfdd501e0e2f0030
Compare	51a8dd5323721b363e61069575511f783e7ea6d3
Diff	Diff

Regressions in System.Xml.Tests.Perf_XmlConvert

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TimeSpan_ToString - Duration of single invocation	277.49 ns	658.13 ns	2.37	0.18	False
DateTime_ToString - Duration of single invocation	183.71 ns	288.82 ns	1.57	0.18	False
DateTime_ToString_Unspecified - Duration of single invocation	181.10 ns	290.99 ns	1.61	0.11	False
DateTime_ToString_RoundtripKind - Duration of single invocation	170.40 ns	278.62 ns	1.64	0.16	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Xml.Tests.Perf_XmlConvert*'

Payloads

Baseline
Compare

Histogram

System.Xml.Tests.Perf_XmlConvert.TimeSpan_ToString

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 658.1346907540907 > 267.52113906134724.
IsChangePoint: Marked as a change because one of 1/15/2023 4:08:29 PM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -100.55453155728313 (T) = (0 -637.5396157976801) / Math.Sqrt((167.879347443946 / (47)) + (105.59765180869502 / (10))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (47) + (10) - 2, .025) and -1.456478871978772 = (259.533930077779 - 637.5396157976801) / 259.533930077779 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Xml.Tests.Perf_XmlConvert.DateTime_ToString

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 288.81829522718266 > 192.40517512714422.
IsChangePoint: Marked as a change because one of 11/18/2022 1:00:00 AM, 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -75.81362854747816 (T) = (0 -287.8905759175816) / Math.Sqrt((29.580736725791738 / (35)) + (21.40268093861035 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -0.5505644276905666 = (185.66824491541448 - 287.8905759175816) / 185.66824491541448 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Xml.Tests.Perf_XmlConvert.DateTime_ToString_Unspecified

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 290.990529860917 > 187.25931211028717.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -57.995831360868436 (T) = (0 -285.23104025444405) / Math.Sqrt((19.336911411512503 / (35)) + (61.150217293459846 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -0.5902163008547835 = (179.36619068809998 - 285.23104025444405) / 179.36619068809998 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Xml.Tests.Perf_XmlConvert.DateTime_ToString_RoundtripKind

```log

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 278.6206731491351 > 179.63042794299344.
IsChangePoint: Marked as a change because one of 11/14/2022 7:25:10 PM, 1/13/2023 11:01:49 AM, 1/17/2023 11:08:46 AM falls between 1/8/2023 8:00:22 AM and 1/17/2023 11:08:46 AM.
IsRegressionStdDev: Marked as regression because -76.1186035012893 (T) = (0 -279.6215766571861) / Math.Sqrt((23.921000902307444 / (35)) + (27.720888082017137 / (22))) is less than -2.0040447832881556 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (22) - 2, .025) and -0.6116043370381623 = (173.5051031018445 - 279.6215766571861) / 173.5051031018445 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[lewing]

probably dotnet/runtime#80668

cc @EgorBo @marek-safar @SamMonoRT @vargaz

[EgorBo]

Some of these regressions are from dotnet/runtime#79461
So I assume Mono needs some improvements here (around RuntimeHelpers.CreateSpan) For CoreCLR that change was mostly noop in terms of codegen, but we also have a Jit intrinsic for RuntimeHelpers.CreateSpan.

The best way to check this theory is to compare codegen for these (NOTE: it should be compiled with the Roslyn used in dotnet/runtime):

static int GetInt8(int index)
{
    ReadOnlySpan<byte> RVA = new byte[] { 1, 2, 3, 4 };
    return RVA[index];
}

static int GetInt32(int index)
{
    ReadOnlySpan<int> RVA = new int[] { 1, 2, 3, 4 };
    return RVA[index];
}

It should be more or less the same: https://www.diffchecker.com/rtxE19AA/
IL diff: sharplab

but I'm pretty sure it's not on Mono due to CreateSpan for ReadOnlySpan<int> that ends up as an icall to ves_icall_System_Runtime_CompilerServices_RuntimeHelpers_GetSpanDataFrom