[Perf] Linux/x64: 8 Improvements on 1/30/2023 2:40:17 PM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [02682ad6397b2833660b104780a9d361f2cba6d7](https://github.com/dotnet/runtime/commit/02682ad6397b2833660b104780a9d361f2cba6d7)
Compare | [b5e79f56d1ed06dbf6765b29c021726ff4195e91](https://github.com/dotnet/runtime/commit/b5e79f56d1ed06dbf6765b29c021726ff4195e91)
Diff | [Diff](https://github.com/dotnet/runtime/compare/02682ad6397b2833660b104780a9d361f2cba6d7...b5e79f56d1ed06dbf6765b29c021726ff4195e91)


### Improvements in System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IterateGetPositionMemory - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.ReadOnlySequenceTests(Char).IterateGetPositionMemory.html>) | 31.40 ns | 29.22 ns | 0.93 | 0.01 | False | | |
[IterateGetPositionArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.ReadOnlySequenceTests(Char).IterateGetPositionArray.html>) | 20.20 ns | 18.53 ns | 0.92 | 0.02 | False | | |
[IterateGetPositionSingleSegment - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.ReadOnlySequenceTests(Char).IterateGetPositionSingleSegment.html>) | 26.66 ns | 23.60 ns | 0.89 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Char)_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Char)_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Char)_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Char).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c91aac30-8bd4-438b-a6f1-9bd5d56d9bd63b48ef563fd465cb0/66c594b2-fe02-4b61-a25d-27c8b376d1bc.zip?sv=2021-08-06&se=2023-03-01T09%3A49%3A26Z&sr=c&sp=rl&sig=%2F8Dgr%2B3b6H2hRL1p5wSgCLrciZHPztuh4iAJIVUzlH8%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c9cf4874-2997-4ce0-adaa-4ab22605408453c998f736a45228e/bcfbbfd5-cdda-4cdd-905b-dd5bad374e7f.zip?sv=2021-08-06&se=2023-03-01T19%3A26%3A49Z&sr=c&sp=rl&sig=7PBU%2F8L4mopTdPNWLCa7SlCI5PCDiShyxGjDKNWmKfg%3D>)
### Histogram

#### System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;.IterateGetPositionMemory

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 29.218727165655544 < 29.845864305633032.
IsChangePoint: Marked as a change because one of 1/11/2023 2:37:52 AM, 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 27.348258867556577 (T) = (0 -29.652137953795556) / Math.Sqrt((0.6896887856311922 / (299)) + (0.26057834732928037 / (43))) is greater than 1.9669657340893643 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (43) - 2, .975) and 0.0777990140914488 = (32.15366108569306 - 29.652137953795556) / 32.15366108569306 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;.IterateGetPositionArray

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 18.532510484861103 < 19.181047895153135.
IsChangePoint: Marked as a change because one of 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 50.67576305448198 (T) = (0 -18.32841503063295) / Math.Sqrt((0.13896826416945157 / (299)) + (0.054497025859964444 / (42))) is greater than 1.9669864608404333 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (42) - 2, .975) and 0.10399851145455663 = (20.455786363019385 - 18.32841503063295) / 20.455786363019385 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;.IterateGetPositionSingleSegment

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 23.601653453148764 < 25.350600737145538.
IsChangePoint: Marked as a change because one of 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 67.64610859756557 (T) = (0 -23.48474447008957) / Math.Sqrt((0.22311752022250905 / (299)) + (0.018497518160189835 / (43))) is greater than 1.9669657340893643 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (43) - 2, .975) and 0.08991159861742451 = (25.80490470421592 - 23.48474447008957) / 25.80490470421592 is greater than 0.05.
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 | [02682ad6397b2833660b104780a9d361f2cba6d7](https://github.com/dotnet/runtime/commit/02682ad6397b2833660b104780a9d361f2cba6d7)
Compare | [b5e79f56d1ed06dbf6765b29c021726ff4195e91](https://github.com/dotnet/runtime/commit/b5e79f56d1ed06dbf6765b29c021726ff4195e91)
Diff | [Diff](https://github.com/dotnet/runtime/compare/02682ad6397b2833660b104780a9d361f2cba6d7...b5e79f56d1ed06dbf6765b29c021726ff4195e91)


### Improvements in System.Globalization.Tests.StringSearch

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IsSuffix_DifferentLastChar - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options%3a%20(en-US%2c%20Ordinal%2c%20False)).html>) | 13.08 ns | 11.59 ns | 0.89 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Globalization.Tests.StringSearch_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Globalization.Tests.StringSearch.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringSearch*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c91aac30-8bd4-438b-a6f1-9bd5d56d9bd63b48ef563fd465cb0/66c594b2-fe02-4b61-a25d-27c8b376d1bc.zip?sv=2021-08-06&se=2023-03-01T09%3A49%3A26Z&sr=c&sp=rl&sig=%2F8Dgr%2B3b6H2hRL1p5wSgCLrciZHPztuh4iAJIVUzlH8%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c9cf4874-2997-4ce0-adaa-4ab22605408453c998f736a45228e/bcfbbfd5-cdda-4cdd-905b-dd5bad374e7f.zip?sv=2021-08-06&se=2023-03-01T19%3A26%3A49Z&sr=c&sp=rl&sig=7PBU%2F8L4mopTdPNWLCa7SlCI5PCDiShyxGjDKNWmKfg%3D>)
### Histogram

#### System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (en-US, Ordinal, False))

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 11.592682144492535 < 12.435847575414911.
IsChangePoint: Marked as a change because one of 12/14/2022 5:20:21 PM, 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 37.49867688936728 (T) = (0 -11.731058912877197) / Math.Sqrt((0.14174803154199883 / (299)) + (0.05790386275704934 / (42))) is greater than 1.9669864608404333 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (42) - 2, .975) and 0.12094836737275613 = (13.345130681136766 - 11.731058912877197) / 13.345130681136766 is greater than 0.05.
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 | [02682ad6397b2833660b104780a9d361f2cba6d7](https://github.com/dotnet/runtime/commit/02682ad6397b2833660b104780a9d361f2cba6d7)
Compare | [b5e79f56d1ed06dbf6765b29c021726ff4195e91](https://github.com/dotnet/runtime/commit/b5e79f56d1ed06dbf6765b29c021726ff4195e91)
Diff | [Diff](https://github.com/dotnet/runtime/compare/02682ad6397b2833660b104780a9d361f2cba6d7...b5e79f56d1ed06dbf6765b29c021726ff4195e91)


### Improvements in System.Text.Json.Document.Tests.Perf_EnumerateArray

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[EnumerateArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.Json.Document.Tests.Perf_EnumerateArray.EnumerateArray(TestCase%3a%20ArrayOfStrings).html>) | 664.31 ns | 511.46 ns | 0.77 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Text.Json.Document.Tests.Perf_EnumerateArray_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Text.Json.Document.Tests.Perf_EnumerateArray.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Document.Tests.Perf_EnumerateArray*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c91aac30-8bd4-438b-a6f1-9bd5d56d9bd63b48ef563fd465cb0/66c594b2-fe02-4b61-a25d-27c8b376d1bc.zip?sv=2021-08-06&se=2023-03-01T09%3A49%3A26Z&sr=c&sp=rl&sig=%2F8Dgr%2B3b6H2hRL1p5wSgCLrciZHPztuh4iAJIVUzlH8%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c9cf4874-2997-4ce0-adaa-4ab22605408453c998f736a45228e/bcfbbfd5-cdda-4cdd-905b-dd5bad374e7f.zip?sv=2021-08-06&se=2023-03-01T19%3A26%3A49Z&sr=c&sp=rl&sig=7PBU%2F8L4mopTdPNWLCa7SlCI5PCDiShyxGjDKNWmKfg%3D>)
### Histogram

#### System.Text.Json.Document.Tests.Perf_EnumerateArray.EnumerateArray(TestCase: ArrayOfStrings)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 511.4636589853784 < 631.5800766551979.
IsChangePoint: Marked as a change because one of 1/11/2023 2:37:52 AM, 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 22.949853387935022 (T) = (0 -512.1592170342191) / Math.Sqrt((3326.813463612278 / (299)) + (1.5140257122043848 / (42))) is greater than 1.9669864608404333 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (42) - 2, .975) and 0.13021678438726486 = (588.8354797389587 - 512.1592170342191) / 588.8354797389587 is greater than 0.05.
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 | [02682ad6397b2833660b104780a9d361f2cba6d7](https://github.com/dotnet/runtime/commit/02682ad6397b2833660b104780a9d361f2cba6d7)
Compare | [b5e79f56d1ed06dbf6765b29c021726ff4195e91](https://github.com/dotnet/runtime/commit/b5e79f56d1ed06dbf6765b29c021726ff4195e91)
Diff | [Diff](https://github.com/dotnet/runtime/compare/02682ad6397b2833660b104780a9d361f2cba6d7...b5e79f56d1ed06dbf6765b29c021726ff4195e91)


### Improvements in System.Text.Json.Document.Tests.Perf_ParseThenWrite

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ParseThenWrite - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented%3a%20False%2c%20TestCase%3a%20DeepTree).html>) | 10.11 μs | 9.10 μs | 0.90 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Text.Json.Document.Tests.Perf_ParseThenWrite_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Text.Json.Document.Tests.Perf_ParseThenWrite.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Document.Tests.Perf_ParseThenWrite*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c91aac30-8bd4-438b-a6f1-9bd5d56d9bd63b48ef563fd465cb0/66c594b2-fe02-4b61-a25d-27c8b376d1bc.zip?sv=2021-08-06&se=2023-03-01T09%3A49%3A26Z&sr=c&sp=rl&sig=%2F8Dgr%2B3b6H2hRL1p5wSgCLrciZHPztuh4iAJIVUzlH8%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c9cf4874-2997-4ce0-adaa-4ab22605408453c998f736a45228e/bcfbbfd5-cdda-4cdd-905b-dd5bad374e7f.zip?sv=2021-08-06&se=2023-03-01T19%3A26%3A49Z&sr=c&sp=rl&sig=7PBU%2F8L4mopTdPNWLCa7SlCI5PCDiShyxGjDKNWmKfg%3D>)
### Histogram

#### System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: False, TestCase: DeepTree)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 9.099408703792559 < 9.619912962099676.
IsChangePoint: Marked as a change because one of 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 34.686474892418175 (T) = (0 -9155.762635887737) / Math.Sqrt((3584.613051067139 / (299)) + (32411.017353073777 / (43))) is greater than 1.9669657340893643 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (43) - 2, .975) and 0.0948870956366835 = (10115.60280684339 - 9155.762635887737) / 10115.60280684339 is greater than 0.05.
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 | [02682ad6397b2833660b104780a9d361f2cba6d7](https://github.com/dotnet/runtime/commit/02682ad6397b2833660b104780a9d361f2cba6d7)
Compare | [b5e79f56d1ed06dbf6765b29c021726ff4195e91](https://github.com/dotnet/runtime/commit/b5e79f56d1ed06dbf6765b29c021726ff4195e91)
Diff | [Diff](https://github.com/dotnet/runtime/compare/02682ad6397b2833660b104780a9d361f2cba6d7...b5e79f56d1ed06dbf6765b29c021726ff4195e91)


### Improvements in System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IterateGetPositionSingleSegment - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.ReadOnlySequenceTests(Byte).IterateGetPositionSingleSegment.html>) | 26.35 ns | 24.07 ns | 0.91 | 0.02 | False | | |
[IterateGetPositionArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Buffers.Tests.ReadOnlySequenceTests(Byte).IterateGetPositionArray.html>) | 20.57 ns | 18.75 ns | 0.91 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Byte)_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Byte)_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_07_2023/refs/heads/main_x64_ubuntu%2018.04_Improvement/System.Buffers.Tests.ReadOnlySequenceTests(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c91aac30-8bd4-438b-a6f1-9bd5d56d9bd63b48ef563fd465cb0/66c594b2-fe02-4b61-a25d-27c8b376d1bc.zip?sv=2021-08-06&se=2023-03-01T09%3A49%3A26Z&sr=c&sp=rl&sig=%2F8Dgr%2B3b6H2hRL1p5wSgCLrciZHPztuh4iAJIVUzlH8%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-c9cf4874-2997-4ce0-adaa-4ab22605408453c998f736a45228e/bcfbbfd5-cdda-4cdd-905b-dd5bad374e7f.zip?sv=2021-08-06&se=2023-03-01T19%3A26%3A49Z&sr=c&sp=rl&sig=7PBU%2F8L4mopTdPNWLCa7SlCI5PCDiShyxGjDKNWmKfg%3D>)
### Histogram

#### System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;.IterateGetPositionSingleSegment

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 24.068700052299388 < 25.099693205144597.
IsChangePoint: Marked as a change because one of 1/12/2023 10:41:19 PM, 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 32.16950068086274 (T) = (0 -23.79871681534601) / Math.Sqrt((0.25191107188473777 / (299)) + (0.08797082636048728 / (42))) is greater than 1.9669864608404333 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (42) - 2, .975) and 0.06825638385368785 = (25.54213026301957 - 23.79871681534601) / 25.54213026301957 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;.IterateGetPositionArray

```log

```
### Description of detection logic
```IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 18.747248851823436 < 19.815580153351192.
IsChangePoint: Marked as a change because one of 1/13/2023 4:37:08 PM, 1/30/2023 11:52:26 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.
IsImprovementStdDev: Marked as improvement because 51.03129297121208 (T) = (0 -18.614168852161527) / Math.Sqrt((0.15148362595356502 / (299)) + (0.04433575977093797 / (43))) is greater than 1.9669657340893643 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (43) - 2, .975) and 0.09706950650114668 = (20.615284328289402 - 18.614168852161527) / 20.615284328289402 is greater than 0.05.
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	02682ad6397b2833660b104780a9d361f2cba6d7
Compare	b5e79f56d1ed06dbf6765b29c021726ff4195e91
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
IterateGetPositionMemory - Duration of single invocation	31.40 ns	29.22 ns	0.93	0.01	False
IterateGetPositionArray - Duration of single invocation	20.20 ns	18.53 ns	0.92	0.02	False
IterateGetPositionSingleSegment - Duration of single invocation	26.66 ns	23.60 ns	0.89	0.02	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
IterateGetPositionSingleSegment - Duration of single invocation	26.35 ns	24.07 ns	0.91	0.02	False
IterateGetPositionArray - Duration of single invocation	20.57 ns	18.75 ns	0.91	0.01	False

[Perf] Linux/x64: 8 Improvements on 1/30/2023 2:40:17 PM #12666

Description

Run Information

Improvements in System.Buffers.Tests.ReadOnlySequenceTests<Char>

Repro

Payloads

Histogram

System.Buffers.Tests.ReadOnlySequenceTests<Char>.IterateGetPositionMemory

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Improvements in System.Globalization.Tests.StringSearch

Repro

Payloads

Histogram

System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (en-US, Ordinal, False))

Description of detection logic

Docs

Run Information

Improvements in System.Text.Json.Document.Tests.Perf_EnumerateArray

Repro

Payloads

Histogram

System.Text.Json.Document.Tests.Perf_EnumerateArray.EnumerateArray(TestCase: ArrayOfStrings)

Description of detection logic

Docs

Run Information

Improvements in System.Text.Json.Document.Tests.Perf_ParseThenWrite

Repro

Payloads

Histogram

System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: False, TestCase: DeepTree)

Description of detection logic

Docs

Run Information

Improvements in System.Buffers.Tests.ReadOnlySequenceTests<Byte>

Repro

Payloads

Histogram

System.Buffers.Tests.ReadOnlySequenceTests<Byte>.IterateGetPositionSingleSegment

Description of detection logic

Description of detection logic

Docs

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