[Perf] Linux/arm64: 13 Regressions on 12/15/2022 1:59:35 AM

### Run Information

Architecture | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.Memory.Span&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Int32).BinarySearch(Size%3a%20512).html>) | 375.17 ns | 708.43 ns | 1.89 | 0.41 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Int32).BinarySearch(Size%3a%2033).html>) | 280.71 ns | 450.43 ns | 1.60 | 0.36 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Int32).BinarySearch(Size%3a%204).html>) | 172.62 ns | 276.09 ns | 1.60 | 0.29 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Memory.Span(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Memory.Span&lt;Int32&gt;.BinarySearch(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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -16.34864101131347 (T) = (0 -701.8537366638262) / Math.Sqrt((517.2967075686106 / (6)) + (993.8140066292484 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.7425581401572088 = (402.7720628021668 - 701.8537366638262) / 402.7720628021668 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.Memory.Span&lt;Int32&gt;.BinarySearch(Size: 33)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -34.30037615844336 (T) = (0 -454.462260663285) / Math.Sqrt((68.65607134564107 / (6)) + (58.11977721358352 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.6250755675257812 = (279.6560786125259 - 454.462260663285) / 279.6560786125259 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.Memory.Span&lt;Int32&gt;.BinarySearch(Size: 4)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -38.82223399149353 (T) = (0 -274.40990685627867) / Math.Sqrt((17.178106665076072 / (6)) + (12.61805220630098 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.5315068050821059 = (179.17642020635176 - 274.40990685627867) / 179.17642020635176 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.Memory.Span&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Char).BinarySearch(Size%3a%2033).html>) | 208.91 ns | 385.25 ns | 1.84 | 0.07 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Char).BinarySearch(Size%3a%204).html>) | 143.06 ns | 235.36 ns | 1.65 | 0.07 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Char).BinarySearch(Size%3a%20512).html>) | 284.23 ns | 582.38 ns | 2.05 | 0.03 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Memory.Span(Char).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span&lt;Char&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Memory.Span&lt;Char&gt;.BinarySearch(Size: 33)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -93.69696556584701 (T) = (0 -385.43725217329944) / Math.Sqrt((2.975336553099184 / (6)) + (11.97083389759816 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.8316471787080463 = (210.43203988945507 - 385.43725217329944) / 210.43203988945507 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.Memory.Span&lt;Char&gt;.BinarySearch(Size: 4)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -50.28372687441524 (T) = (0 -235.7985676566853) / Math.Sqrt((7.133574338504429 / (6)) + (10.207255951014657 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.7019661022992816 = (138.54480846482886 - 235.7985676566853) / 138.54480846482886 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.Memory.Span&lt;Char&gt;.BinarySearch(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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -71.9109829916498 (T) = (0 -573.7889400405447) / Math.Sqrt((11.073216611807771 / (6)) + (55.67822751833942 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.9904955641829962 = (288.2643650984763 - 573.7889400405447) / 288.2643650984763 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.Collections.CtorDefaultSize&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ConcurrentQueue - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.CtorDefaultSize(Int32).ConcurrentQueue.html>) | 598.33 ns | 656.40 ns | 1.10 | 0.14 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Collections.CtorDefaultSize(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CtorDefaultSize&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Collections.CtorDefaultSize&lt;Int32&gt;.ConcurrentQueue

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -5.931943159828186 (T) = (0 -648.3228514216726) / Math.Sqrt((19.721063013469564 / (6)) + (252.06915899768921 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.08050097026914697 = (600.0206101251152 - 648.3228514216726) / 600.0206101251152 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### 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
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Byte).BinarySearch(Size%3a%204).html>) | 130.72 ns | 242.04 ns | 1.85 | 0.21 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Byte).BinarySearch(Size%3a%2033).html>) | 202.18 ns | 384.11 ns | 1.90 | 0.07 | False | | |
[BinarySearch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Byte).BinarySearch(Size%3a%20512).html>) | 273.49 ns | 567.59 ns | 2.08 | 0.18 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Memory.Span(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\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-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Memory.Span&lt;Byte&gt;.BinarySearch(Size: 4)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -25.3595870844355 (T) = (0 -239.41677714515998) / Math.Sqrt((10.557414916240187 / (6)) + (60.86205876256012 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.774335920947268 = (134.9331737686639 - 239.41677714515998) / 134.9331737686639 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.Memory.Span&lt;Byte&gt;.BinarySearch(Size: 33)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -70.59791292965566 (T) = (0 -381.25060346314245) / Math.Sqrt((11.609022836648672 / (6)) + (17.26160095509663 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.862007351675329 = (204.75246948950803 - 381.25060346314245) / 204.75246948950803 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.Memory.Span&lt;Byte&gt;.BinarySearch(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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -31.753957341254086 (T) = (0 -574.1759787767564) / Math.Sqrt((3.4141019069199485 / (6)) + (356.01610465733194 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -1.0982368518433254 = (273.64688513231295 - 574.1759787767564) / 273.64688513231295 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.Collections.ContainsTrue&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Span - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(String).Span(Size%3a%20512).html>) | 4.48 ms | 5.62 ms | 1.26 | 0.23 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Collections.ContainsTrue(String).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsTrue&lt;String&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Collections.ContainsTrue&lt;String&gt;.Span(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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -4.7342813100706564 (T) = (0 -6461233.005208334) / Math.Sqrt((47653885158.61735 / (6)) + (770740916392.4843 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.4885304827963928 = (4340678.9984375 - 6461233.005208334) / 4340678.9984375 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.IO.Tests.Perf_File

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[WriteAllBytes - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.IO.Tests.Perf_File.WriteAllBytes(size%3a%201048576).html>) | 1.44 ms | 3.34 ms | 2.32 | 0.41 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.IO.Tests.Perf_File.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_File*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.IO.Tests.Perf_File.WriteAllBytes(size: 1048576)

```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 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -9.329839442229577 (T) = (0 -3123871.7978472225) / Math.Sqrt((64280530850.953514 / (6)) + (59350327330.2323 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.9135195792028272 = (1632526.6967734024 - 3123871.7978472225) / 1632526.6967734024 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 | arm64
-- | --
OS | ubuntu 20.04
Baseline | [4aae104908d98a46014b5d569d77d67b001c9d19](https://github.com/dotnet/runtime/commit/4aae104908d98a46014b5d569d77d67b001c9d19)
Compare | [c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c](https://github.com/dotnet/runtime/commit/c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4aae104908d98a46014b5d569d77d67b001c9d19...c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c)


### Regressions in System.Collections.ContainsFalse&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Span - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(String).Span(Size%3a%20512).html>) | 9.00 ms | 11.38 ms | 1.26 | 0.27 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Collections.ContainsFalse(String).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsFalse&lt;String&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-f5908430-9bfb-4cf1-b7d9-64580e373cd0b9d6ce14f27489caf/cfe57811-2e75-4c30-8d8c-40032cb12a2b.zip?sv=2021-08-06&se=2023-01-12T03%3A22%3A35Z&sr=c&sp=rl&sig=kRdINY4Rvcj82A%2BJZaU1Lt8qBE906uXzVHBQ4w%2B32B4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-0b201595-acde-4310-b610-a2cd36d4a43798b8897aad043c6a2/cb2a8931-c291-40af-8573-23d6c9f6d680.zip?sv=2021-08-06&se=2023-01-15T03%3A11%3A39Z&sr=c&sp=rl&sig=HoY84hopM8dEISZ4WffOVBkBncnIisIbiPTi7X8BNsA%3D>)
### Histogram

#### System.Collections.ContainsFalse&lt;String&gt;.Span(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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 12/14/2022 12:26:48 AM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -4.699647477795573 (T) = (0 -12922271.760778401) / Math.Sqrt((96871410344.99533 / (6)) + (3177075487322.4272 / (4))) is less than -2.3060041352041716 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (6) + (4) - 2, .025) and -0.4867698222234234 = (8691507.970920138 - 12922271.760778401) / 8691507.970920138 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	arm64
OS	ubuntu 20.04
Baseline	4aae104908d98a46014b5d569d77d67b001c9d19
Compare	c0ebf2bdcdcef90f82c67d357750c34bb56c3f4c
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
BinarySearch - Duration of single invocation	375.17 ns	708.43 ns	1.89	0.41	False
BinarySearch - Duration of single invocation	280.71 ns	450.43 ns	1.60	0.36	False
BinarySearch - Duration of single invocation	172.62 ns	276.09 ns	1.60	0.29	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
BinarySearch - Duration of single invocation	208.91 ns	385.25 ns	1.84	0.07	False
BinarySearch - Duration of single invocation	143.06 ns	235.36 ns	1.65	0.07	False
BinarySearch - Duration of single invocation	284.23 ns	582.38 ns	2.05	0.03	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
BinarySearch - Duration of single invocation	130.72 ns	242.04 ns	1.85	0.21	False
BinarySearch - Duration of single invocation	202.18 ns	384.11 ns	1.90	0.07	False
BinarySearch - Duration of single invocation	273.49 ns	567.59 ns	2.08	0.18	False

[Perf] Linux/arm64: 13 Regressions on 12/15/2022 1:59:35 AM #79973

Description

Run Information

Regressions in System.Memory.Span<Int32>

Repro

Payloads

Histogram

System.Memory.Span<Int32>.BinarySearch(Size: 512)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Regressions in System.Memory.Span<Char>

Repro

Payloads

Histogram

System.Memory.Span<Char>.BinarySearch(Size: 33)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Collections.CtorDefaultSize<Int32>

Repro

Payloads

Histogram

System.Collections.CtorDefaultSize<Int32>.ConcurrentQueue

Description of detection logic

Docs

Run Information

Regressions in System.Memory.Span<Byte>

Repro

Payloads

Histogram

System.Memory.Span<Byte>.BinarySearch(Size: 4)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Collections.ContainsTrue<String>

Repro

Payloads

Histogram

System.Collections.ContainsTrue<String>.Span(Size: 512)

Description of detection logic

Docs

Run Information

Regressions in System.IO.Tests.Perf_File

Repro

Payloads

Histogram

System.IO.Tests.Perf_File.WriteAllBytes(size: 1048576)

Description of detection logic

Docs

Run Information

Regressions in System.Collections.ContainsFalse<String>

Repro

Payloads

Histogram

System.Collections.ContainsFalse<String>.Span(Size: 512)

Description of detection logic

Docs

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

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Development

Issue actions