[Perf] Changes at 1/18/2022 10:13:58 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	Windows 10.0.19042
Baseline	5a12420546d7f0d963bcccf082400c1b057e38ef
Compare	557901e779a009cf4a51327963727a4d1ded0094
Diff	Diff

Regressions in System.Collections.Concurrent.AddRemoveFromDifferentThreads<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ConcurrentBag - Duration of single invocation	175.40 ms	239.28 ms	1.36	0.58	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.Concurrent.AddRemoveFromDifferentThreads<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Collections.Concurrent.AddRemoveFromDifferentThreads<Int32>.ConcurrentBag(Size: 2000000)

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 239.28327222222222 > 175.44719820833333.
IsChangePoint: Marked as a change because one of 1/11/2022 2:18:34 PM, 1/18/2022 7:04:48 PM, 1/25/2022 5:49:56 AM falls between 1/16/2022 5:21:52 PM and 1/25/2022 5:49:56 AM.
IsRegressionStdDev: Marked as regression because -22.080649738601355 (T) = (0 -229764744.3172515) / Math.Sqrt((71783200506588.23 / (27)) + (185534541685475.94 / (40))) is less than -1.997137908391408 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (40) - 2, .025) and -0.3506168819389351 = (170118371.38256633 - 229764744.3172515) / 170118371.38256633 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

[kunalspathak]

The GC region work reduced the noise for this benchmark. dotnet/runtime#63935