[Perf] Alpine/x64: 4 Regressions on 1/3/2023 9:28:36 AM

### Run Information

Architecture | x64
-- | --
OS | alpine 3.15
Baseline | [ee6de921299d1b86a02d9049b9c8dd164cab1401](https://github.com/dotnet/runtime/commit/ee6de921299d1b86a02d9049b9c8dd164cab1401)
Compare | [7fa0d5b5942f138c362f2753398b4a8d4f71eb73](https://github.com/dotnet/runtime/commit/7fa0d5b5942f138c362f2753398b4a8d4f71eb73)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ee6de921299d1b86a02d9049b9c8dd164cab1401...7fa0d5b5942f138c362f2753398b4a8d4f71eb73)


### Regressions in System.Memory.Span&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IndexOfAnyTwoValues - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.15/System.Memory.Span(Byte).IndexOfAnyTwoValues(Size%3a%20512).html>) | 7.00 ns | 8.87 ns | 1.27 | 0.19 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Memory.Span(Byte)_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Memory.Span(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span&lt;Byte&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d8c12bd4-f72f-4f69-b900-43c7f2d18acdad0068c11664017bb/b2f3e169-eee3-43ee-a3a1-292e1f392251.zip?sv=2021-08-06&se=2023-02-02T01%3A43%3A38Z&sr=c&sp=rl&sig=eGhJxDKSrszVt%2B%2BN5C7ze9fNsxXTpECNb2zskISuCZ0%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-58bf7900-d1b1-4906-8cc7-12dde51e303e0f74c404834439bbd/98304c59-bcc5-417c-89ff-cc62889a8917.zip?sv=2021-08-06&se=2023-02-02T15%3A57%3A57Z&sr=c&sp=rl&sig=0IPVbgw1JJm8wq%2FS2E9gHX%2FOq2tBtLtBW3%2FOebx%2Frtc%3D>)
### Histogram

#### System.Memory.Span&lt;Byte&gt;.IndexOfAnyTwoValues(Size: 512)

```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 8.865383362022623 > 7.347480226005509.
IsChangePoint: Marked as a change because one of 1/3/2023 6:29:42 AM, 1/10/2023 7:48:18 AM falls between 1/1/2023 3:57:25 AM and 1/10/2023 7:48:18 AM.
IsRegressionStdDev: Marked as regression because -12.803954024964908 (T) = (0 -7.944410787921018) / Math.Sqrt((0.03223053059958381 / (13)) + (0.07585064659128789 / (30))) is less than -2.019540970439573 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (30) - 2, .025) and -0.12873290265358006 = (7.038344296727957 - 7.944410787921018) / 7.038344296727957 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 | alpine 3.15
Baseline | [ee6de921299d1b86a02d9049b9c8dd164cab1401](https://github.com/dotnet/runtime/commit/ee6de921299d1b86a02d9049b9c8dd164cab1401)
Compare | [7fa0d5b5942f138c362f2753398b4a8d4f71eb73](https://github.com/dotnet/runtime/commit/7fa0d5b5942f138c362f2753398b4a8d4f71eb73)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ee6de921299d1b86a02d9049b9c8dd164cab1401...7fa0d5b5942f138c362f2753398b4a8d4f71eb73)


### Regressions in System.Collections.AddGivenSize&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IDictionary - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.15/System.Collections.AddGivenSize(Int32).IDictionary(Size%3a%20512).html>) | 4.04 μs | 4.35 μs | 1.08 | 0.10 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Collections.AddGivenSize(Int32)_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Collections.AddGivenSize(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.AddGivenSize&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d8c12bd4-f72f-4f69-b900-43c7f2d18acdad0068c11664017bb/b2f3e169-eee3-43ee-a3a1-292e1f392251.zip?sv=2021-08-06&se=2023-02-02T01%3A43%3A38Z&sr=c&sp=rl&sig=eGhJxDKSrszVt%2B%2BN5C7ze9fNsxXTpECNb2zskISuCZ0%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-58bf7900-d1b1-4906-8cc7-12dde51e303e0f74c404834439bbd/98304c59-bcc5-417c-89ff-cc62889a8917.zip?sv=2021-08-06&se=2023-02-02T15%3A57%3A57Z&sr=c&sp=rl&sig=0IPVbgw1JJm8wq%2FS2E9gHX%2FOq2tBtLtBW3%2FOebx%2Frtc%3D>)
### Histogram

#### System.Collections.AddGivenSize&lt;Int32&gt;.IDictionary(Size: 512)

```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 4.354598658328728 > 4.259384390236758.
IsChangePoint: Marked as a change because one of 11/16/2022 6:51:59 PM, 12/14/2022 12:26:48 AM, 12/21/2022 3:18:57 AM, 1/3/2023 6:29:42 AM, 1/10/2023 7:48:18 AM falls between 1/1/2023 3:57:25 AM and 1/10/2023 7:48:18 AM.
IsRegressionStdDev: Marked as regression because -9.959330984028687 (T) = (0 -4288.813933144703) / Math.Sqrt((1990.7501838033504 / (14)) + (12401.548625168 / (30))) is less than -2.0180817028167235 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (14) + (30) - 2, .025) and -0.05790463492200513 = (4054.0647914458746 - 4288.813933144703) / 4054.0647914458746 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 | alpine 3.15
Baseline | [ee6de921299d1b86a02d9049b9c8dd164cab1401](https://github.com/dotnet/runtime/commit/ee6de921299d1b86a02d9049b9c8dd164cab1401)
Compare | [7fa0d5b5942f138c362f2753398b4a8d4f71eb73](https://github.com/dotnet/runtime/commit/7fa0d5b5942f138c362f2753398b4a8d4f71eb73)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ee6de921299d1b86a02d9049b9c8dd164cab1401...7fa0d5b5942f138c362f2753398b4a8d4f71eb73)


### Regressions in Microsoft.Extensions.Primitives.StringSegmentBenchmark

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IndexOfAny - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.15/Microsoft.Extensions.Primitives.StringSegmentBenchmark.IndexOfAny.html>) | 4.89 ns | 6.00 ns | 1.23 | 0.04 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/Microsoft.Extensions.Primitives.StringSegmentBenchmark_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/Microsoft.Extensions.Primitives.StringSegmentBenchmark.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.Extensions.Primitives.StringSegmentBenchmark*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d8c12bd4-f72f-4f69-b900-43c7f2d18acdad0068c11664017bb/b2f3e169-eee3-43ee-a3a1-292e1f392251.zip?sv=2021-08-06&se=2023-02-02T01%3A43%3A38Z&sr=c&sp=rl&sig=eGhJxDKSrszVt%2B%2BN5C7ze9fNsxXTpECNb2zskISuCZ0%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-58bf7900-d1b1-4906-8cc7-12dde51e303e0f74c404834439bbd/98304c59-bcc5-417c-89ff-cc62889a8917.zip?sv=2021-08-06&se=2023-02-02T15%3A57%3A57Z&sr=c&sp=rl&sig=0IPVbgw1JJm8wq%2FS2E9gHX%2FOq2tBtLtBW3%2FOebx%2Frtc%3D>)
### Histogram

#### Microsoft.Extensions.Primitives.StringSegmentBenchmark.IndexOfAny

```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 6.004671479508234 > 5.134335117184184.
IsChangePoint: Marked as a change because one of 11/4/2022 4:27:34 PM, 1/3/2023 6:29:42 AM, 1/10/2023 7:48:18 AM falls between 1/1/2023 3:57:25 AM and 1/10/2023 7:48:18 AM.
IsRegressionStdDev: Marked as regression because -36.4142450102855 (T) = (0 -6.010982075556171) / Math.Sqrt((0.006150546727840375 / (13)) + (0.012346158398923989 / (30))) is less than -2.019540970439573 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (30) - 2, .025) and -0.21978421041181445 = (4.927906119990509 - 6.010982075556171) / 4.927906119990509 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 | alpine 3.15
Baseline | [ee6de921299d1b86a02d9049b9c8dd164cab1401](https://github.com/dotnet/runtime/commit/ee6de921299d1b86a02d9049b9c8dd164cab1401)
Compare | [7fa0d5b5942f138c362f2753398b4a8d4f71eb73](https://github.com/dotnet/runtime/commit/7fa0d5b5942f138c362f2753398b4a8d4f71eb73)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ee6de921299d1b86a02d9049b9c8dd164cab1401...7fa0d5b5942f138c362f2753398b4a8d4f71eb73)


### Regressions in System.Net.Tests.Perf_WebUtility

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[HtmlDecode_Entities - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.15/System.Net.Tests.Perf_WebUtility.HtmlDecode_Entities.html>) | 116.54 ns | 123.34 ns | 1.06 | 0.02 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Net.Tests.Perf_WebUtility_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_10_2023/refs/heads/main_x64_alpine%203.15_Regression/System.Net.Tests.Perf_WebUtility.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Net.Tests.Perf_WebUtility*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d8c12bd4-f72f-4f69-b900-43c7f2d18acdad0068c11664017bb/b2f3e169-eee3-43ee-a3a1-292e1f392251.zip?sv=2021-08-06&se=2023-02-02T01%3A43%3A38Z&sr=c&sp=rl&sig=eGhJxDKSrszVt%2B%2BN5C7ze9fNsxXTpECNb2zskISuCZ0%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-58bf7900-d1b1-4906-8cc7-12dde51e303e0f74c404834439bbd/98304c59-bcc5-417c-89ff-cc62889a8917.zip?sv=2021-08-06&se=2023-02-02T15%3A57%3A57Z&sr=c&sp=rl&sig=0IPVbgw1JJm8wq%2FS2E9gHX%2FOq2tBtLtBW3%2FOebx%2Frtc%3D>)
### Histogram

#### System.Net.Tests.Perf_WebUtility.HtmlDecode_Entities

```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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 1/3/2023 6:29:42 AM, 1/10/2023 7:48:18 AM falls between 1/1/2023 3:57:25 AM and 1/10/2023 7:48:18 AM.
IsRegressionStdDev: Marked as regression because -13.068181845624293 (T) = (0 -123.7616681517338) / Math.Sqrt((2.9388924732445436 / (11)) + (1.3779871647413013 / (32))) is less than -2.019540970439573 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (11) + (32) - 2, .025) and -0.06248818637471656 = (116.48286516391039 - 123.7616681517338) / 116.48286516391039 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	alpine 3.15
Baseline	ee6de921299d1b86a02d9049b9c8dd164cab1401
Compare	7fa0d5b5942f138c362f2753398b4a8d4f71eb73
Diff	Diff

[Perf] Alpine/x64: 4 Regressions on 1/3/2023 9:28:36 AM #11415

Description

Run Information

Regressions in System.Memory.Span<Byte>

Repro

Payloads

Histogram

System.Memory.Span<Byte>.IndexOfAnyTwoValues(Size: 512)

Description of detection logic

Docs

Regressions in System.Collections.AddGivenSize<Int32>

Repro

Payloads

Histogram

System.Collections.AddGivenSize<Int32>.IDictionary(Size: 512)

Description of detection logic

Docs

Run Information

Regressions in Microsoft.Extensions.Primitives.StringSegmentBenchmark

Repro

Payloads

Histogram

Microsoft.Extensions.Primitives.StringSegmentBenchmark.IndexOfAny

Description of detection logic

Docs

Run Information

Regressions in System.Net.Tests.Perf_WebUtility

Repro

Payloads

Histogram

System.Net.Tests.Perf_WebUtility.HtmlDecode_Entities

Description of detection logic

Docs

Metadata

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