[Perf] Changes at 4/8/2022 2:40:20 PM

### Run Information

Architecture | x64
-- | --
OS | alpine 3.12
Baseline | [7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414](https://github.com/dotnet/runtime/commit/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414)
Compare | [aff3c1867b50d8a021c0a7b1df94f54a40cb44a5](https://github.com/dotnet/runtime/commit/aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414...aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)


### Improvements in System.Tests.Perf_GC&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[AllocateArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Tests.Perf_GC(Char).AllocateArray(length%3a%2010000%2c%20pinned%3a%20True).html>) | 1.06 μs | 954.29 ns | 0.90 | 0.03 | False | | |
[AllocateUninitializedArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Tests.Perf_GC(Char).AllocateUninitializedArray(length%3a%2010000%2c%20pinned%3a%20True).html>) | 740.65 ns | 626.50 ns | 0.85 | 0.11 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_GC(Char)_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_GC(Char)_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_GC(Char).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Tests.Perf_GC&lt;Char&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-87fef495-2d35-4674-80b1-00c18413cd70a5ebdb6c226439ea1/b15a49d9-d4e5-443d-a69b-0155afc41fea.zip?sv=2019-07-07&se=2022-05-08T08%3A41%3A11Z&sr=c&sp=rl&sig=KCrYa5fxzgPyvnNGbdbmERz%2BBspOTEeOeSRg0DpKagc%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d6b43731-4a53-4ca3-85eb-23451b242be10c654054b7d421696/b6051df9-b4c6-4d46-9559-d73cca4dc017.zip?sv=2019-07-07&se=2022-05-08T20%3A38%3A47Z&sr=c&sp=rl&sig=3mn5ZFrXam2x%2BIyZ180lELBMo4wRLN9QUEZrzxk%2FjsE%3D>)
### Histogram

#### System.Tests.Perf_GC&lt;Char&gt;.AllocateArray(length: 10000, pinned: True)

```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 954.2923977758791 < 1.0229930914610967.
IsChangePoint: Marked as a change because one of 3/11/2022 8:42:43 PM, 3/31/2022 1:23:38 AM, 4/8/2022 10:19:59 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 16.671776766382386 (T) = (0 -956.1633732728978) / Math.Sqrt((1353.265685049209 / (299)) + (116.65300802707043 / (17))) is greater than 1.9675476980854363 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (17) - 2, .975) and 0.05557015062918181 = (1012.4239231848682 - 956.1633732728978) / 1012.4239231848682 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_GC&lt;Char&gt;.AllocateUninitializedArray(length: 10000, pinned: True)

```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 626.5048937493385 < 698.4767556796102.
IsChangePoint: Marked as a change because one of 3/11/2022 8:42:43 PM, 4/8/2022 10:19:59 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 23.053223107326218 (T) = (0 -610.6182313839513) / Math.Sqrt((1881.587440210484 / (299)) + (41.2670524969892 / (17))) is greater than 1.9675476980854363 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (17) - 2, .975) and 0.10030562750078052 = (678.6951769940976 - 610.6182313839513) / 678.6951769940976 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 | alpine 3.12
Baseline | [7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414](https://github.com/dotnet/runtime/commit/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414)
Compare | [aff3c1867b50d8a021c0a7b1df94f54a40cb44a5](https://github.com/dotnet/runtime/commit/aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414...aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)


### Improvements in System.Tests.Perf_GC&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[AllocateUninitializedArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Tests.Perf_GC(Byte).AllocateUninitializedArray(length%3a%2010000%2c%20pinned%3a%20True).html>) | 401.82 ns | 369.82 ns | 0.92 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_GC(Byte)_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_GC(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Tests.Perf_GC&lt;Byte&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-87fef495-2d35-4674-80b1-00c18413cd70a5ebdb6c226439ea1/b15a49d9-d4e5-443d-a69b-0155afc41fea.zip?sv=2019-07-07&se=2022-05-08T08%3A41%3A11Z&sr=c&sp=rl&sig=KCrYa5fxzgPyvnNGbdbmERz%2BBspOTEeOeSRg0DpKagc%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d6b43731-4a53-4ca3-85eb-23451b242be10c654054b7d421696/b6051df9-b4c6-4d46-9559-d73cca4dc017.zip?sv=2019-07-07&se=2022-05-08T20%3A38%3A47Z&sr=c&sp=rl&sig=3mn5ZFrXam2x%2BIyZ180lELBMo4wRLN9QUEZrzxk%2FjsE%3D>)
### Histogram

#### System.Tests.Perf_GC&lt;Byte&gt;.AllocateUninitializedArray(length: 10000, pinned: True)

```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 369.8205578566667 < 397.97711004506334.
IsChangePoint: Marked as a change because one of 3/11/2022 8:42:43 PM, 3/30/2022 12:01:24 PM, 4/8/2022 10:19:59 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 14.070403120289654 (T) = (0 -358.2470792670732) / Math.Sqrt((397.12243002648665 / (299)) + (27.84901986307877 / (17))) is greater than 1.9675476980854363 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (17) - 2, .975) and 0.0633589532021885 = (382.48065306538547 - 358.2470792670732) / 382.48065306538547 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 | alpine 3.12
Baseline | [7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414](https://github.com/dotnet/runtime/commit/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414)
Compare | [aff3c1867b50d8a021c0a7b1df94f54a40cb44a5](https://github.com/dotnet/runtime/commit/aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414...aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)


### Improvements in System.Text.Tests.Perf_StringBuilder

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ctor_capacity - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Text.Tests.Perf_StringBuilder.ctor_capacity(length%3a%20100000).html>) | 7.24 μs | 5.78 μs | 0.80 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Text.Tests.Perf_StringBuilder_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Text.Tests.Perf_StringBuilder.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Tests.Perf_StringBuilder*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-87fef495-2d35-4674-80b1-00c18413cd70a5ebdb6c226439ea1/b15a49d9-d4e5-443d-a69b-0155afc41fea.zip?sv=2019-07-07&se=2022-05-08T08%3A41%3A11Z&sr=c&sp=rl&sig=KCrYa5fxzgPyvnNGbdbmERz%2BBspOTEeOeSRg0DpKagc%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d6b43731-4a53-4ca3-85eb-23451b242be10c654054b7d421696/b6051df9-b4c6-4d46-9559-d73cca4dc017.zip?sv=2019-07-07&se=2022-05-08T20%3A38%3A47Z&sr=c&sp=rl&sig=3mn5ZFrXam2x%2BIyZ180lELBMo4wRLN9QUEZrzxk%2FjsE%3D>)
### Histogram

#### System.Text.Tests.Perf_StringBuilder.ctor_capacity(length: 100000)

```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 5.7824502400531195 < 6.590361320229195.
IsChangePoint: Marked as a change because one of 3/11/2022 8:42:43 PM, 3/30/2022 6:37:35 PM, 4/8/2022 10:19:59 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 18.03710849250364 (T) = (0 -5718.568998732569) / Math.Sqrt((137270.33820719706 / (299)) + (4373.065918254506 / (17))) is greater than 1.9675476980854363 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (17) - 2, .975) and 0.0778469066621133 = (6201.322795581866 - 5718.568998732569) / 6201.322795581866 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 | alpine 3.12
Baseline | [7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414](https://github.com/dotnet/runtime/commit/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414)
Compare | [aff3c1867b50d8a021c0a7b1df94f54a40cb44a5](https://github.com/dotnet/runtime/commit/aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414...aff3c1867b50d8a021c0a7b1df94f54a40cb44a5)


### Improvements in System.Tests.Perf_String

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Replace_Char - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Tests.Perf_String.Replace_Char(text%3a%20%22This%20is%20a%20very%20nice%20sentence%22%2c%20oldChar%3a%20%27z%27%2c%20newChar%3a%20%27y%27).html>) | 7.88 ns | 6.45 ns | 0.82 | 0.31 | False | | |
[IndexerCheckBoundCheckHoist - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_alpine 3.12/System.Tests.Perf_String.IndexerCheckBoundCheckHoist.html>) | 22.49 ns | 19.40 ns | 0.86 | 0.31 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_String_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_String_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_12_2022/refs/heads/main_x64_alpine%203.12_Improvement/System.Tests.Perf_String.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Tests.Perf_String*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-87fef495-2d35-4674-80b1-00c18413cd70a5ebdb6c226439ea1/b15a49d9-d4e5-443d-a69b-0155afc41fea.zip?sv=2019-07-07&se=2022-05-08T08%3A41%3A11Z&sr=c&sp=rl&sig=KCrYa5fxzgPyvnNGbdbmERz%2BBspOTEeOeSRg0DpKagc%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d6b43731-4a53-4ca3-85eb-23451b242be10c654054b7d421696/b6051df9-b4c6-4d46-9559-d73cca4dc017.zip?sv=2019-07-07&se=2022-05-08T20%3A38%3A47Z&sr=c&sp=rl&sig=3mn5ZFrXam2x%2BIyZ180lELBMo4wRLN9QUEZrzxk%2FjsE%3D>)
### Histogram

#### System.Tests.Perf_String.Replace_Char(text: "This is a very nice sentence", oldChar: 'z', newChar: 'y')

```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 6.448455506691434 < 7.53736226856374.
IsChangePoint: Marked as a change because one of 2/3/2022 4:53:52 PM, 3/11/2022 8:42:43 PM, 3/24/2022 8:39:13 PM, 4/8/2022 10:19:59 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 41.60668290822864 (T) = (0 -6.503551761062246) / Math.Sqrt((0.14824388568888955 / (299)) + (0.0033589678579386164 / (17))) is greater than 1.9675476980854363 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (17) - 2, .975) and 0.14417352650646653 = (7.59914768062078 - 6.503551761062246) / 7.59914768062078 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_String.IndexerCheckBoundCheckHoist

```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 19.397489720735432 < 21.39337646082046.
IsChangePoint: Marked as a change because one of 3/29/2022 3:04:55 PM, 3/30/2022 7:10:16 AM, 4/8/2022 2:39:06 AM, 4/12/2022 4:54:37 AM falls between 4/3/2022 1:52:36 PM and 4/12/2022 4:54:37 AM.
IsImprovementStdDev: Marked as improvement because 10.060002184884636 (T) = (0 -19.84169117382651) / Math.Sqrt((1.866607254092388 / (299)) + (0.15933362970479056 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.05777984096749393 = (21.05844476327107 - 19.84169117382651) / 21.05844476327107 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	alpine 3.12
Baseline	7c21927c257f8eff7ceb3f3c0fd4ee2c8fe6c414
Compare	aff3c1867b50d8a021c0a7b1df94f54a40cb44a5
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
AllocateArray - Duration of single invocation	1.06 μs	954.29 ns	0.90	0.03	False
AllocateUninitializedArray - Duration of single invocation	740.65 ns	626.50 ns	0.85	0.11	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Replace_Char - Duration of single invocation	7.88 ns	6.45 ns	0.82	0.31	False
IndexerCheckBoundCheckHoist - Duration of single invocation	22.49 ns	19.40 ns	0.86	0.31	False

Uh oh!

[Perf] Changes at 4/8/2022 2:40:20 PM #4514

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Improvements in System.Tests.Perf_GC<Char>

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System.Tests.Perf_GC<Char>.AllocateArray(length: 10000, pinned: True)

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Description of detection logic

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Improvements in System.Tests.Perf_GC<Byte>

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System.Tests.Perf_GC<Byte>.AllocateUninitializedArray(length: 10000, pinned: True)

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Improvements in System.Text.Tests.Perf_StringBuilder

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System.Text.Tests.Perf_StringBuilder.ctor_capacity(length: 100000)

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Improvements in System.Tests.Perf_String

Repro

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System.Tests.Perf_String.Replace_Char(text: "This is a very nice sentence", oldChar: 'z', newChar: 'y')

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Description of detection logic

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