Regressions from "Avoid xchg for resolution" 

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1](https://github.com/dotnet/runtime/commit/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1)
Compare | [120b7215c9d029fccee94f46864494d79074a0eb](https://github.com/dotnet/runtime/commit/120b7215c9d029fccee94f46864494d79074a0eb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1...120b7215c9d029fccee94f46864494d79074a0eb)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig

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.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern%3a%20%22.%7b0%2c2%7d(Tom%7cSawyer%7cHuckleberry%7cFinn)%22%2c%20Options%3a%20Compiled).html>) | 280.39 ms | 303.10 ms | 1.08 | 0.01 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-2d80492e-872d-4636-8aaf-08c04b5ac9d3204544a76814e4189/bb5f5852-5c93-4268-b980-cf4f38cae4a6.zip?sv=2021-08-06&se=2023-03-03T06%3A54%3A37Z&sr=c&sp=rl&sig=rp9yakaelyFNzBD2wz7Y4OSPcd0ldjQzXAHBim0C3LQ%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a86a7b9d-8d76-402f-a32b-d8e3ee211391e20a0c04bd54076ba/6d87d685-f510-4e62-9d08-2e42bc2debef.zip?sv=2021-08-06&se=2023-03-03T17%3A12%3A13Z&sr=c&sp=rl&sig=CfB%2FdyMKQh029Vm1%2B4GE07xc6lrcdY4Sf1TPPKiPOwo%3D>)
### Histogram

#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

```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 303.0988273333333 > 291.22724740673084.
IsChangePoint: Marked as a change because one of 1/11/2023 2:37:52 AM, 1/27/2023 7:12:54 PM, 2/1/2023 8:39:12 AM, 2/7/2023 8:22:47 AM falls between 1/29/2023 5:12:48 PM and 2/7/2023 8:22:47 AM.
IsRegressionStdDev: Marked as regression because -6.8991552954396305 (T) = (0 -303268185.5826008) / Math.Sqrt((192513142277717.06 / (27)) + (51382853519.585594 / (32))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (32) - 2, .025) and -0.06468243531225498 = (284843795.2239316 - 303268185.5826008) / 284843795.2239316 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 | [9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1](https://github.com/dotnet/runtime/commit/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1)
Compare | [120b7215c9d029fccee94f46864494d79074a0eb](https://github.com/dotnet/runtime/commit/120b7215c9d029fccee94f46864494d79074a0eb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1...120b7215c9d029fccee94f46864494d79074a0eb)


### Regressions in System.Net.Http.Tests.SocketsHttpHandlerPerfTest

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Get_EnumerateHeaders_Unvalidated - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Net.Http.Tests.SocketsHttpHandlerPerfTest.Get_EnumerateHeaders_Unvalidated(ssl%3a%20True%2c%20chunkedResponse%3a%20True%2c%20responseLength%3a%20100000).html>) | 8.95 ms | 17.44 ms | 1.95 | 0.90 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Net.Http.Tests.SocketsHttpHandlerPerfTest_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Net.Http.Tests.SocketsHttpHandlerPerfTest.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Net.Http.Tests.SocketsHttpHandlerPerfTest*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-2d80492e-872d-4636-8aaf-08c04b5ac9d3204544a76814e4189/bb5f5852-5c93-4268-b980-cf4f38cae4a6.zip?sv=2021-08-06&se=2023-03-03T06%3A54%3A37Z&sr=c&sp=rl&sig=rp9yakaelyFNzBD2wz7Y4OSPcd0ldjQzXAHBim0C3LQ%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a86a7b9d-8d76-402f-a32b-d8e3ee211391e20a0c04bd54076ba/6d87d685-f510-4e62-9d08-2e42bc2debef.zip?sv=2021-08-06&se=2023-03-03T17%3A12%3A13Z&sr=c&sp=rl&sig=CfB%2FdyMKQh029Vm1%2B4GE07xc6lrcdY4Sf1TPPKiPOwo%3D>)
### Histogram

#### System.Net.Http.Tests.SocketsHttpHandlerPerfTest.Get_EnumerateHeaders_Unvalidated(ssl: True, chunkedResponse: True, responseLength: 100000)

```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 17.440992809375 > 11.242045705142887.
IsChangePoint: Marked as a change because one of 2/1/2023 8:39:12 AM, 2/7/2023 8:22:47 AM falls between 1/29/2023 5:12:48 PM and 2/7/2023 8:22:47 AM.
IsRegressionStdDev: Marked as regression because -3.548097165978861 (T) = (0 -15794333.253045475) / Math.Sqrt((17374797894054.414 / (27)) + (37834194257680.664 / (32))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (32) - 2, .025) and -0.4358447430604137 = (11000028.609904464 - 15794333.253045475) / 11000028.609904464 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 | [9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1](https://github.com/dotnet/runtime/commit/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1)
Compare | [120b7215c9d029fccee94f46864494d79074a0eb](https://github.com/dotnet/runtime/commit/120b7215c9d029fccee94f46864494d79074a0eb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1...120b7215c9d029fccee94f46864494d79074a0eb)


### Regressions in SciMark2.kernel

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[benchSparseMult - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/SciMark2.kernel.benchSparseMult.html>) | 609.18 ms | 696.21 ms | 1.14 | 0.00 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/SciMark2.kernel_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Regression/SciMark2.kernel.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'SciMark2.kernel*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-2d80492e-872d-4636-8aaf-08c04b5ac9d3204544a76814e4189/bb5f5852-5c93-4268-b980-cf4f38cae4a6.zip?sv=2021-08-06&se=2023-03-03T06%3A54%3A37Z&sr=c&sp=rl&sig=rp9yakaelyFNzBD2wz7Y4OSPcd0ldjQzXAHBim0C3LQ%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a86a7b9d-8d76-402f-a32b-d8e3ee211391e20a0c04bd54076ba/6d87d685-f510-4e62-9d08-2e42bc2debef.zip?sv=2021-08-06&se=2023-03-03T17%3A12%3A13Z&sr=c&sp=rl&sig=CfB%2FdyMKQh029Vm1%2B4GE07xc6lrcdY4Sf1TPPKiPOwo%3D>)
### Histogram

#### SciMark2.kernel.benchSparseMult

```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 696.2089355333333 > 639.6030126750002.
IsChangePoint: Marked as a change because one of 2/1/2023 8:39:12 AM, 2/7/2023 8:22:47 AM falls between 1/29/2023 5:12:48 PM and 2/7/2023 8:22:47 AM.
IsRegressionStdDev: Marked as regression because -657.0518642017826 (T) = (0 -696370455.7566222) / Math.Sqrt((209470639230.72266 / (26)) + (303351012897.6243 / (32))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (32) - 2, .025) and -0.14278876574405194 = (609360606.8162792 - 696370455.7566222) / 609360606.8162792 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>




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Regressions from "Avoid xchg for resolution" #81768

Run Information

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig

Repro

Payloads

Histogram

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

Description of detection logic

Docs

Regressions in System.Net.Http.Tests.SocketsHttpHandlerPerfTest

Repro

Payloads

Histogram

System.Net.Http.Tests.SocketsHttpHandlerPerfTest.Get_EnumerateHeaders_Unvalidated(ssl: True, chunkedResponse: True, responseLength: 100000)

Description of detection logic

Docs

Run Information

Regressions in SciMark2.kernel

Repro

Payloads

Histogram

SciMark2.kernel.benchSparseMult

Description of detection logic

Docs

Metadata

Assignees

Labels

Type

Projects

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Development

Architecture	x64
OS	ubuntu 18.04
Baseline	9e05d3347be231ae1bfcc7037ddecfb5c4ca51a1
Compare	120b7215c9d029fccee94f46864494d79074a0eb
Diff	Diff

Regressions from "Avoid xchg for resolution" #81768

Description

Run Information

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig

Repro

Payloads

Histogram

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

Description of detection logic

Docs

Regressions in System.Net.Http.Tests.SocketsHttpHandlerPerfTest

Repro

Payloads

Histogram

System.Net.Http.Tests.SocketsHttpHandlerPerfTest.Get_EnumerateHeaders_Unvalidated(ssl: True, chunkedResponse: True, responseLength: 100000)

Description of detection logic

Docs

Run Information

Regressions in SciMark2.kernel

Repro

Payloads

Histogram

SciMark2.kernel.benchSparseMult

Description of detection logic

Docs

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions