[Perf] Changes at 4/19/2022 9:35:37 PM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22%5b%5e%5cn%5d*%22%2c%20Options%3a%20NonBacktracking).html>) | 4.56 ms | 8.34 ms | 1.83 | 0.08 | True | | |
[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fs).*%22%2c%20Options%3a%20NonBacktracking).html>) | 3.31 ms | 6.74 ms | 2.04 | 0.07 | True | | |
[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22.*%22%2c%20Options%3a%20NonBacktracking).html>) | 4.51 ms | 8.29 ms | 1.84 | 0.06 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "[^\n]*", Options: NonBacktracking)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 8.340815666666668 > 4.726036502497475.
IsChangePoint: Marked as a change because one of 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -57.2571338950626 (T) = (0 -8390487.941977082) / Math.Sqrt((7818886183.785275 / (23)) + (148372360025.30594 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.8579772658824698 = (4515926.053590281 - 8390487.941977082) / 4515926.053590281 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 as regression because Edge Detector said so.

```#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?s).*", Options: NonBacktracking)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 6.738108863523573 > 3.4824430852604173.
IsChangePoint: Marked as a change because one of 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -230.11277573533923 (T) = (0 -6760860.29769661) / Math.Sqrt((4163092571.808942 / (23)) + (1425926982.3002477 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -1.027713587578754 = (3334228.433005471 - 6760860.29769661) / 3334228.433005471 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 as regression because Edge Detector said so.

```#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: ".*", Options: NonBacktracking)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 8.285871557692309 > 4.731868686555944.
IsChangePoint: Marked as a change because one of 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -72.49287773610047 (T) = (0 -8355328.40275375) / Math.Sqrt((1522638542.8598952 / (23)) + (96277890522.02982 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.8535516993334773 = (4507739.603787831 - 8355328.40275375) / 4507739.603787831 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 as 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 | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Threading.Channels.Tests.BoundedChannelPerfTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[PingPong - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Threading.Channels.Tests.BoundedChannelPerfTests.PingPong.html>) | 10.68 ms | 11.48 ms | 1.08 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Channels.Tests.BoundedChannelPerfTests_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Channels.Tests.BoundedChannelPerfTests.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Threading.Channels.Tests.BoundedChannelPerfTests*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Threading.Channels.Tests.BoundedChannelPerfTests.PingPong

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 11.483906828054298 > 11.177547596358696.
IsChangePoint: Marked as a change because one of 3/4/2022 11:33:07 AM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -13.454632532900792 (T) = (0 -11457107.121401245) / Math.Sqrt((51819395511.96745 / (23)) + (78626422250.46277 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.0855089872305328 = (10554594.44019146 - 11457107.121401245) / 10554594.44019146 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](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 | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SingleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).SingleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20False).html>) | 320.73 ns | 377.65 ns | 1.18 | 0.11 | False | | |
[SingleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).SingleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20True).html>) | 304.77 ns | 363.47 ns | 1.19 | 0.18 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Byte)_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Byte)_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: False)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 377.64991607142855 > 337.06842618571426.
IsChangePoint: Marked as a change because one of 2/23/2022 3:28:40 AM, 4/8/2022 10:19:59 AM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -30.00621472037777 (T) = (0 -375.3227486811438) / Math.Sqrt((39.06110740213733 / (23)) + (36.12035619091378 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.15221060159970629 = (325.74144705842247 - 375.3227486811438) / 325.74144705842247 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.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: True)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 363.46922040816327 > 322.73015333571436.
IsChangePoint: Marked as a change because one of 3/4/2022 3:52:45 PM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -25.614525912904604 (T) = (0 -364.7889477103773) / Math.Sqrt((65.04840047003277 / (23)) + (54.09452180995144 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.17212572413881427 = (311.2199828038033 - 364.7889477103773) / 311.2199828038033 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](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 | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Threading.Channels.Tests.UnboundedChannelPerfTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[PingPong - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Threading.Channels.Tests.UnboundedChannelPerfTests.PingPong.html>) | 11.24 ms | 12.22 ms | 1.09 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Channels.Tests.UnboundedChannelPerfTests_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Channels.Tests.UnboundedChannelPerfTests.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Threading.Channels.Tests.UnboundedChannelPerfTests*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Threading.Channels.Tests.UnboundedChannelPerfTests.PingPong

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 12.221611837301584 > 11.713151503260871.
IsChangePoint: Marked as a change because one of 3/4/2022 3:52:45 PM, 4/8/2022 7:02:49 PM, 4/13/2022 1:59:07 PM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -16.9173345628046 (T) = (0 -12121900.066502059) / Math.Sqrt((26176971242.8094 / (23)) + (84054772863.84938 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.09055028050787453 = (11115397.687905625 - 12121900.066502059) / 11115397.687905625 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](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 | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Threading.Tasks.Tests.Perf_AsyncMethods

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Yield - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Threading.Tasks.Tests.Perf_AsyncMethods.Yield.html>) | 286.02 ns | 335.84 ns | 1.17 | 0.07 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Tasks.Tests.Perf_AsyncMethods_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Threading.Tasks.Tests.Perf_AsyncMethods.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Threading.Tasks.Tests.Perf_AsyncMethods*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Threading.Tasks.Tests.Perf_AsyncMethods.Yield

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 335.8411737333334 > 298.34728274749995.
IsChangePoint: Marked as a change because one of 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -36.33611859898587 (T) = (0 -335.5713782329692) / Math.Sqrt((24.539556620704968 / (23)) + (30.74939443819776 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.1779003623284728 = (284.88944308465267 - 335.5713782329692) / 284.88944308465267 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 as 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 | [f1e10a53132cc648cea914e75f953ff5a5087399](https://github.com/dotnet/runtime/commit/f1e10a53132cc648cea914e75f953ff5a5087399)
Compare | [de0b85f2b1690355f05bf13d3a88b8828b9853b1](https://github.com/dotnet/runtime/commit/de0b85f2b1690355f05bf13d3a88b8828b9853b1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f1e10a53132cc648cea914e75f953ff5a5087399...de0b85f2b1690355f05bf13d3a88b8828b9853b1)


### Regressions in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SingleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.RentReturnArrayPoolTests(Object).SingleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20True).html>) | 345.52 ns | 385.09 ns | 1.11 | 0.12 | False | | |
[SingleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.RentReturnArrayPoolTests(Object).SingleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20False).html>) | 341.15 ns | 384.71 ns | 1.13 | 0.05 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Object)_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Object)_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_26_2022/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests(Object).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-02d5fb3d-5171-4c47-ad87-f9fcf2d8ae490cbfdd3fe344f6591/fb57a4a5-9040-43e1-b447-884f569b6038.zip?sv=2019-07-07&se=2022-05-19T11%3A59%3A58Z&sr=c&sp=rl&sig=AMaDGmheHvHMEXg2r%2FW55TItLP4xe8Nu1IgVdYFdQ5g%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-b8b01d2f-f018-4257-b2e3-a4d3559ac70ae0cfceb385344da99/9412c73c-58a6-4c06-bd23-74657d284e94.zip?sv=2019-07-07&se=2022-05-20T03%3A44%3A07Z&sr=c&sp=rl&sig=p7TMVxtVlleVFamed4nhJT2wxwF0LAdqth8fQCFGKOE%3D>)
### Histogram

#### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: True)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 385.0914007857143 > 357.5385098666667.
IsChangePoint: Marked as a change because one of 3/4/2022 3:52:45 PM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -21.419046122139918 (T) = (0 -381.2374003492809) / Math.Sqrt((76.94792665571985 / (23)) + (34.07846515728208 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.13219986600310113 = (336.72270400024644 - 381.2374003492809) / 336.72270400024644 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.Tests.RentReturnArrayPoolTests&lt;Object&gt;.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: False)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 384.7131822222222 > 359.7747919428571.
IsChangePoint: Marked as a change because one of 3/4/2022 11:33:07 AM, 4/8/2022 10:19:59 AM, 4/19/2022 4:39:14 PM, 4/26/2022 6:18:08 AM falls between 4/17/2022 3:25:40 PM and 4/26/2022 6:18:08 AM.
IsRegressionStdDev: Marked as regression because -20.754947919742296 (T) = (0 -381.1052267487689) / Math.Sqrt((45.19552534822438 / (23)) + (39.32008869080374 / (35))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (23) + (35) - 2, .025) and -0.1058372434970825 = (344.630486077289 - 381.1052267487689) / 344.630486077289 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](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	f1e10a53132cc648cea914e75f953ff5a5087399
Compare	de0b85f2b1690355f05bf13d3a88b8828b9853b1
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Count - Duration of single invocation	4.56 ms	8.34 ms	1.83	0.08	True
Count - Duration of single invocation	3.31 ms	6.74 ms	2.04	0.07	True
Count - Duration of single invocation	4.51 ms	8.29 ms	1.84	0.06	True

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SingleSerial - Duration of single invocation	320.73 ns	377.65 ns	1.18	0.11	False
SingleSerial - Duration of single invocation	304.77 ns	363.47 ns	1.19	0.18	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
SingleSerial - Duration of single invocation	345.52 ns	385.09 ns	1.11	0.12	False
SingleSerial - Duration of single invocation	341.15 ns	384.71 ns	1.13	0.05	False

[Perf] Changes at 4/19/2022 9:35:37 PM #4817

Description

Run Information

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Repro

Payloads

Histogram

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "[^\n]*", Options: NonBacktracking)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Regressions in System.Threading.Channels.Tests.BoundedChannelPerfTests

Repro

Payloads

Histogram

System.Threading.Channels.Tests.BoundedChannelPerfTests.PingPong

Description of detection logic

Docs

Run Information

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Byte>

Repro

Payloads

Histogram

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: False)

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Threading.Channels.Tests.UnboundedChannelPerfTests

Repro

Payloads

Histogram

System.Threading.Channels.Tests.UnboundedChannelPerfTests.PingPong

Description of detection logic

Docs

Run Information

Regressions in System.Threading.Tasks.Tests.Perf_AsyncMethods

Repro

Payloads

Histogram

System.Threading.Tasks.Tests.Perf_AsyncMethods.Yield

Description of detection logic

Docs

Run Information

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Object>

Repro

Payloads

Histogram

System.Buffers.Tests.RentReturnArrayPoolTests<Object>.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: True)

Description of detection logic

Description of detection logic

Docs

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions