[Perf] Linux/x64: 8 Regressions on 10/25/2022 12:27:43 PM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [5108757b997c59ab8ba1fc5309ab0d4e730e2b77](https://github.com/dotnet/runtime/commit/5108757b997c59ab8ba1fc5309ab0d4e730e2b77)
Compare | [f4b715f1cfadcbf85486f369724528c051be5733](https://github.com/dotnet/runtime/commit/f4b715f1cfadcbf85486f369724528c051be5733)
Diff | [Diff](https://github.com/dotnet/runtime/compare/5108757b997c59ab8ba1fc5309ab0d4e730e2b77...f4b715f1cfadcbf85486f369724528c051be5733)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;Dictionary&lt;String, String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Dictionary(String%2c%20String)).SerializeToUtf8Bytes.html>) | 38.33 μs | 41.19 μs | 1.07 | 0.00 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Dictionary(String%2c%20String)).SerializeToWriter.html>) | 37.63 μs | 40.99 μs | 1.09 | 0.00 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Dictionary(String%2c%20String)).SerializeToStream.html>) | 39.12 μs | 42.35 μs | 1.08 | 0.00 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(Dictionary(String,%20String)).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;Dictionary&lt;String, String&gt;&gt;*'
```

### Related Issues

#### Regressions

* [[Perf] Windows/x64: 10 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9338>)
* [[Perf] Alpine/x64: 12 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9318>)
* [[Perf] Windows/x64: 6 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9307>)
* [[Perf] Linux/x64: 8 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/runtime/issues/77731>)
#### Improvements
* [[Perf] Linux/x64: 2 Improvements on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9331>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-2b517d71-58a1-4fb0-9406-5e9bfceedb39d5e7c2bb94d4327a8/80086446-1a78-4c47-97c6-ffc05db77a19.zip?sv=2021-08-06&se=2022-11-24T05%3A48%3A06Z&sr=c&sp=rl&sig=XD5r%2Bxh%2FDJZQ%2B508h7mxUYjDjSuKMjWkIiLcQgxcKGA%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-575f2d3a-4746-484b-b4b9-a17b667a8382bf7ab4a328849fbba/ea4781dc-f8c5-474e-bf13-85b784a8c3b5.zip?sv=2021-08-06&se=2022-11-24T17%3A01%3A15Z&sr=c&sp=rl&sig=waW%2B9Z54lQFhtdKxvlMKzqmDlCbh4IRLWc49UW9Oqms%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/reports/11_01_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson-Dictionary-String, String--.SerializeToStream.txt?sv=2018-03-28&sr=c&sig=JoytaT70%2ByX0ce090BDZwAg8TDntVqLeANIlSNxVryw%3D&se=2022-11-24T00%3A17%3A57Z&sp=racwdl>)
#### System.Text.Json.Serialization.Tests.WriteJson&lt;Dictionary&lt;String, String&gt;&gt;.SerializeToUtf8Bytes

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 41.19229951077397 > 40.2988708713241.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -38.859507512178354 (T) = (0 -41405.27184342041) / Math.Sqrt((67903.13798543392 / (17)) + (49041.70475777477 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.07466581123050155 = (38528.5094312352 - 41405.27184342041) / 38528.5094312352 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson&lt;Dictionary&lt;String, String&gt;&gt;.SerializeToWriter

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 40.98579117716166 > 39.59248766643648.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -29.205029867439894 (T) = (0 -40824.94549951425) / Math.Sqrt((146698.3928160469 / (17)) + (38064.0425676531 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.07614357202646804 = (37936.337270163196 - 40824.94549951425) / 37936.337270163196 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.WriteJson&lt;Dictionary&lt;String, String&gt;&gt;.SerializeToStream

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 42.35071906920992 > 41.033094007646895.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -25.604568556776417 (T) = (0 -42099.32046705353) / Math.Sqrt((189495.98123079867 / (17)) + (39780.30731195595 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.07249558589599962 = (39253.60721357404 - 42099.32046705353) / 39253.60721357404 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>
### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [5108757b997c59ab8ba1fc5309ab0d4e730e2b77](https://github.com/dotnet/runtime/commit/5108757b997c59ab8ba1fc5309ab0d4e730e2b77)
Compare | [f4b715f1cfadcbf85486f369724528c051be5733](https://github.com/dotnet/runtime/commit/f4b715f1cfadcbf85486f369724528c051be5733)
Diff | [Diff](https://github.com/dotnet/runtime/compare/5108757b997c59ab8ba1fc5309ab0d4e730e2b77...f4b715f1cfadcbf85486f369724528c051be5733)


### Regressions in System.Text.Json.Tests.Perf_Strings

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[WriteStringsUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted%3a%20True%2c%20SkipValidation%3a%20True%2c%20Escaped%3a%20OneEscaped).html>) | 42.48 ms | 52.23 ms | 1.23 | 0.00 | False | | |
[WriteStringsUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted%3a%20True%2c%20SkipValidation%3a%20True%2c%20Escaped%3a%20NoneEscaped).html>) | 26.83 ms | 37.08 ms | 1.38 | 0.00 | False | | |
[WriteStringsUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted%3a%20True%2c%20SkipValidation%3a%20False%2c%20Escaped%3a%20AllEscaped).html>) | 124.27 ms | 216.55 ms | 1.74 | 0.18 | False | | |
[WriteStringsUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted%3a%20True%2c%20SkipValidation%3a%20True%2c%20Escaped%3a%20AllEscaped).html>) | 120.27 ms | 219.52 ms | 1.83 | 0.02 | False | | |
[WriteStringsUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted%3a%20True%2c%20SkipValidation%3a%20False%2c%20Escaped%3a%20OneEscaped).html>) | 43.16 ms | 51.91 ms | 1.20 | 0.00 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Tests.Perf_Strings.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Tests.Perf_Strings*'
```

### Related Issues

#### Regressions

* [[Perf] Windows/x64: 10 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9338>)
* [[Perf] Alpine/x64: 12 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9318>)
* [[Perf] Windows/x64: 6 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9307>)
* [[Perf] Linux/x64: 8 Regressions on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/runtime/issues/77731>)
#### Improvements
* [[Perf] Linux/x64: 2 Improvements on 10/25/2022 12:27:43 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9331>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-2b517d71-58a1-4fb0-9406-5e9bfceedb39d5e7c2bb94d4327a8/80086446-1a78-4c47-97c6-ffc05db77a19.zip?sv=2021-08-06&se=2022-11-24T05%3A48%3A06Z&sr=c&sp=rl&sig=XD5r%2Bxh%2FDJZQ%2B508h7mxUYjDjSuKMjWkIiLcQgxcKGA%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-575f2d3a-4746-484b-b4b9-a17b667a8382bf7ab4a328849fbba/ea4781dc-f8c5-474e-bf13-85b784a8c3b5.zip?sv=2021-08-06&se=2022-11-24T17%3A01%3A15Z&sr=c&sp=rl&sig=waW%2B9Z54lQFhtdKxvlMKzqmDlCbh4IRLWc49UW9Oqms%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/reports/11_01_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted- True, SkipValidation- False, Escaped- OneEscaped).txt?sv=2018-03-28&sr=c&sig=JoytaT70%2ByX0ce090BDZwAg8TDntVqLeANIlSNxVryw%3D&se=2022-11-24T00%3A17%3A57Z&sp=racwdl>)
#### System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: True, Escaped: OneEscaped)

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 52.23277989285714 > 44.635313475000004.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -199.1803998005975 (T) = (0 -52384990.36119156) / Math.Sqrt((21570267646.12087 / (17)) + (39462176651.104904 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.23268646027811166 = (42496605.624574445 - 52384990.36119156) / 42496605.624574445 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: True, Escaped: NoneEscaped)

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 37.08365311428572 > 28.23125232788462.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -203.0113901928131 (T) = (0 -36924033.60399125) / Math.Sqrt((11006680080.33792 / (17)) + (58490573723.158844 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.37073417929040897 = (26937413.65893845 - 36924033.60399125) / 26937413.65893845 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: False, Escaped: AllEscaped)

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 216.54523714285713 > 128.8745705625.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -146.51231834752994 (T) = (0 -214934070.2859307) / Math.Sqrt((6022041992050.817 / (17)) + (1510696338901.8418 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.757869498963925 = (122269639.70454645 - 214934070.2859307) / 122269639.70454645 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: True, Escaped: AllEscaped)

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 219.5176467857143 > 126.260763825.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -271.6737862201362 (T) = (0 -218330712.1158119) / Math.Sqrt((552719372430.2446 / (16)) + (3159307017528.8384 / (33))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (16) + (33) - 2, .025) and -0.8153180834681577 = (120271325.50714858 - 218330712.1158119) / 120271325.50714858 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: False, Escaped: OneEscaped)

```log

```
### Description of detection logic
```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.
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.
IsRegressionWindowed: Marked as regression because 51.908773 > 45.00764144041667.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -106.7442563290323 (T) = (0 -52051160.8832487) / Math.Sqrt((99784015775.82983 / (17)) + (56996714791.007225 / (33))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (33) - 2, .025) and -0.2176462464688151 = (42747358.71292465 - 52051160.8832487) / 42747358.71292465 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>




Architecture	x64
OS	ubuntu 18.04
Baseline	5108757b997c59ab8ba1fc5309ab0d4e730e2b77
Compare	f4b715f1cfadcbf85486f369724528c051be5733
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Edge Detector
SerializeToUtf8Bytes - Duration of single invocation	38.33 μs	41.19 μs	1.07	False
SerializeToWriter - Duration of single invocation	37.63 μs	40.99 μs	1.09	False
SerializeToStream - Duration of single invocation	39.12 μs	42.35 μs	1.08	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WriteStringsUtf16 - Duration of single invocation	42.48 ms	52.23 ms	1.23	0.00	False
WriteStringsUtf16 - Duration of single invocation	26.83 ms	37.08 ms	1.38	0.00	False
WriteStringsUtf16 - Duration of single invocation	124.27 ms	216.55 ms	1.74	0.18	False
WriteStringsUtf16 - Duration of single invocation	120.27 ms	219.52 ms	1.83	0.02	False
WriteStringsUtf16 - Duration of single invocation	43.16 ms	51.91 ms	1.20	0.00	False

[Perf] Linux/x64: 8 Regressions on 10/25/2022 12:27:43 PM #9351

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Regressions in System.Text.Json.Serialization.Tests.WriteJson<Dictionary<String, String>>

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System.Text.Json.Serialization.Tests.WriteJson<Dictionary<String, String>>.SerializeToUtf8Bytes

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Description of detection logic

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Regressions in System.Text.Json.Tests.Perf_Strings

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: True, Escaped: OneEscaped)

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Description of detection logic

Description of detection logic

Description of detection logic

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