[Perf] Linux/arm64: 18 Regressions on 12/15/2022 8:20:21 PM

### Run Information

Architecture | arm64
-- | --
OS | ubuntu 20.04
Baseline | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Tests.Perf_Array

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ArrayCopy2D - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Tests.Perf_Array.ArrayCopy2D.html>) | 1.24 μs | 1.46 μs | 1.18 | 0.02 | False | | |
[ArrayCopy3D - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Tests.Perf_Array.ArrayCopy3D.html>) | 1.23 μs | 1.46 μs | 1.19 | 0.02 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Tests.Perf_Array.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Array*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Tests.Perf_Array.ArrayCopy2D

```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 1.4616857447392377 > 1.300046908623267.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -170.19673343587064 (T) = (0 -1460.6923494215728) / Math.Sqrt((10.522936700972934 / (26)) + (14.079656108889 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.17818293313885278 = (1239.7839998667043 - 1460.6923494215728) / 1239.7839998667043 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.Tests.Perf_Array.ArrayCopy3D

```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 1.4645858972250931 > 1.2974511323775926.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -118.52377846725305 (T) = (0 -1462.0934548711243) / Math.Sqrt((28.178437136910734 / (26)) + (26.64814876724457 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.17896037827176403 = (1240.1548701869053 - 1462.0934548711243) / 1240.1548701869053 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 | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Collections.CopyTo&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ImmutableArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).ImmutableArray(Size%3a%202048).html>) | 1.98 μs | 2.16 μs | 1.09 | 0.03 | False | | |
[ReadOnlyMemory - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).ReadOnlyMemory(Size%3a%202048).html>) | 1.94 μs | 2.11 μs | 1.09 | 0.03 | False | | |
[Array - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).Array(Size%3a%202048).html>) | 1.98 μs | 2.14 μs | 1.08 | 0.03 | False | | |
[List - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).List(Size%3a%202048).html>) | 1.92 μs | 2.10 μs | 1.09 | 0.03 | False | | |
[Memory - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).Memory(Size%3a%202048).html>) | 1.94 μs | 2.12 μs | 1.09 | 0.03 | False | | |
[Span - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).Span(Size%3a%202048).html>) | 1.93 μs | 2.11 μs | 1.09 | 0.03 | False | | |
[ReadOnlySpan - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(String).ReadOnlySpan(Size%3a%202048).html>) | 1.92 μs | 2.09 μs | 1.09 | 0.03 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Collections.CopyTo(String).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CopyTo&lt;String&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Collections.CopyTo&lt;String&gt;.ImmutableArray(Size: 2048)

```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 2.1649684199269332 > 2.0785752553105583.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -77.96639097404662 (T) = (0 -2161.6157114519674) / Math.Sqrt((78.38138701369256 / (26)) + (21.094162609558296 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08707948681155694 = (1988.4615041279674 - 2161.6157114519674) / 1988.4615041279674 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.Collections.CopyTo&lt;String&gt;.ReadOnlyMemory(Size: 2048)

```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 2.1116654824133323 > 2.038521395821063.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -90.85360468186921 (T) = (0 -2112.0362204582566) / Math.Sqrt((75.01370851096387 / (26)) + (6.471840084803416 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08716003911676948 = (1942.7095776755343 - 2112.0362204582566) / 1942.7095776755343 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.Collections.CopyTo&lt;String&gt;.Array(Size: 2048)

```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 2.1365348047808377 > 2.0634517585305825.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -84.82197416377313 (T) = (0 -2142.224195895837) / Math.Sqrt((25.793909842396847 / (26)) + (35.0487763272712 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08806414167438789 = (1968.8399919137444 - 2142.224195895837) / 1968.8399919137444 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.Collections.CopyTo&lt;String&gt;.List(Size: 2048)

```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 2.0991323316984682 > 2.0160023187966405.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -106.5049374382995 (T) = (0 -2093.608443186556) / Math.Sqrt((54.494668906946764 / (26)) + (5.26189426764662 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08887555940858027 = (1922.7251682677988 - 2093.608443186556) / 1922.7251682677988 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.Collections.CopyTo&lt;String&gt;.Memory(Size: 2048)

```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 2.118674278335368 > 2.0392737633010958.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -205.4463457565274 (T) = (0 -2115.3226070403634) / Math.Sqrt((5.794366444971954 / (26)) + (5.247791520834637 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08844123192232467 = (1943.4421859455256 - 2115.3226070403634) / 1943.4421859455256 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.Collections.CopyTo&lt;String&gt;.Span(Size: 2048)

```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 2.106077693157052 > 2.0243549567673793.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -181.51050082823267 (T) = (0 -2098.939235420994) / Math.Sqrt((4.766244404571856 / (26)) + (7.698905719301121 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08846028562499682 = (1928.3562874467004 - 2098.939235420994) / 1928.3562874467004 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.Collections.CopyTo&lt;String&gt;.ReadOnlySpan(Size: 2048)

```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 2.0940609638216845 > 2.0213405413535406.
IsChangePoint: Marked as a change because one of 11/17/2022 1:45:21 AM, 12/15/2022 2:06:03 PM, 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 -238.41922323652233 (T) = (0 -2095.0089955567755) / Math.Sqrt((4.524873679161598 / (26)) + (3.6738217237777517 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.08827402562562706 = (1925.0748857599506 - 2095.0089955567755) / 1925.0748857599506 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 | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[LessThanAnyBenchmark - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Runtime.Intrinsics.Tests.Perf_Vector128Of(UInt64).LessThanAnyBenchmark.html>) | 7.93 ns | 8.99 ns | 1.13 | 0.10 | False | | |
[AbsBenchmark - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Runtime.Intrinsics.Tests.Perf_Vector128Of(UInt64).AbsBenchmark.html>) | 8.13 ns | 9.16 ns | 1.13 | 0.10 | False | | |
[AndNotBenchmark - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Runtime.Intrinsics.Tests.Perf_Vector128Of(UInt64).AndNotBenchmark.html>) | 13.54 ns | 15.28 ns | 1.13 | 0.12 | False | | |
[EqualsAnyBenchmark - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Runtime.Intrinsics.Tests.Perf_Vector128Of(UInt64).EqualsAnyBenchmark.html>) | 7.95 ns | 9.14 ns | 1.15 | 0.06 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Runtime.Intrinsics.Tests.Perf_Vector128Of(UInt64).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;.LessThanAnyBenchmark

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 8.99305279087833 > 8.361989243689308.
IsChangePoint: Marked as a change because one of 11/11/2022 5:53:56 PM, 11/21/2022 12:46:21 PM, 11/24/2022 8:21:24 PM, 12/15/2022 2:06:03 PM, 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 -14.345097710131329 (T) = (0 -9.052074984476404) / Math.Sqrt((0.1111727467326796 / (26)) + (0.004762460424629083 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.12201409206400822 = (8.067701687974882 - 9.052074984476404) / 8.067701687974882 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.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;.AbsBenchmark

```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 9.161657283843287 > 8.671206998020676.
IsChangePoint: Marked as a change because one of 12/5/2022 3:49:45 AM, 12/14/2022 12:01:27 PM, 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 -21.266514016629372 (T) = (0 -9.210012024261449) / Math.Sqrt((0.023759966264480036 / (22)) + (0.01337244889759914 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.11423838994047222 = (8.265746457320942 - 9.210012024261449) / 8.265746457320942 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.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;.AndNotBenchmark

```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 15.284496234155903 > 14.214410798557376.
IsChangePoint: Marked as a change because one of 11/24/2022 8:21:24 PM, 12/5/2022 5:12:51 PM, 12/10/2022 11:25:25 PM, 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 -5.472362856862341 (T) = (0 -14.761825736955958) / Math.Sqrt((0.19696977504305946 / (10)) + (0.25033898692890155 / (27))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (10) + (27) - 2, .025) and -0.06734491170608778 = (13.830417492092646 - 14.761825736955958) / 13.830417492092646 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.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;.EqualsAnyBenchmark

```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 9.14243607466586 > 8.343161752107832.
IsChangePoint: Marked as a change because one of 11/11/2022 5:53:56 PM, 11/21/2022 12:46:21 PM, 11/24/2022 8:21:24 PM, 12/15/2022 2:06:03 PM, 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 -17.96291810103715 (T) = (0 -9.06485805672969) / Math.Sqrt((0.07430126104814 / (26)) + (0.005749438099946073 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.13021536325602753 = (8.020469683419291 - 9.06485805672969) / 8.020469683419291 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 | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Collections.CopyTo&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[List - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(Int32).List(Size%3a%202048).html>) | 619.28 ns | 734.51 ns | 1.19 | 0.02 | False | | |
[ImmutableArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(Int32).ImmutableArray(Size%3a%202048).html>) | 667.42 ns | 767.19 ns | 1.15 | 0.02 | False | | |
[Array - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CopyTo(Int32).Array(Size%3a%202048).html>) | 661.44 ns | 769.02 ns | 1.16 | 0.02 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Collections.CopyTo(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CopyTo&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Collections.CopyTo&lt;Int32&gt;.List(Size: 2048)

```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 734.5084045920537 > 649.1049936278023.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -160.35098378736694 (T) = (0 -732.8285049707293) / Math.Sqrt((9.793962524170762 / (26)) + (1.182618714153787 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.1796052894013704 = (621.2489139842933 - 732.8285049707293) / 621.2489139842933 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.Collections.CopyTo&lt;Int32&gt;.ImmutableArray(Size: 2048)

```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 767.1858845679012 > 690.3041637141297.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -56.43735123311368 (T) = (0 -773.4244947976567) / Math.Sqrt((47.611116410473834 / (26)) + (19.584448589810645 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.16100212565393954 = (666.1697491397977 - 773.4244947976567) / 666.1697491397977 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.Collections.CopyTo&lt;Int32&gt;.Array(Size: 2048)

```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 769.0152151681593 > 693.5070894314025.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -68.96190624658715 (T) = (0 -771.9839340808837) / Math.Sqrt((45.32819019528541 / (26)) + (8.317466070118375 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.1644573741304727 = (662.9559408796239 - 771.9839340808837) / 662.9559408796239 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 | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Numerics.Tests.Perf_BigInteger

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[GreatestCommonDivisor - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Numerics.Tests.Perf_BigInteger.GreatestCommonDivisor(arguments%3a%2016%2c16%20bits).html>) | 36.14 ns | 39.02 ns | 1.08 | 0.04 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Numerics.Tests.Perf_BigInteger.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_BigInteger*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Numerics.Tests.Perf_BigInteger.GreatestCommonDivisor(arguments: 16,16 bits)

```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 39.02053193474436 > 38.19309772936127.
IsChangePoint: Marked as a change because one of 12/15/2022 2:06:03 PM, 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 -24.514089747580385 (T) = (0 -39.13310524925348) / Math.Sqrt((0.2323276935686077 / (26)) + (0.01607918109296484 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.06823398472481415 = (36.63345840783608 - 39.13310524925348) / 36.63345840783608 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 | [53bcf1c843128fbfee11d135102856eae0472c51](https://github.com/dotnet/runtime/commit/53bcf1c843128fbfee11d135102856eae0472c51)
Compare | [d19cf5040529d516ec94bb679525315c644d581d](https://github.com/dotnet/runtime/commit/d19cf5040529d516ec94bb679525315c644d581d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/53bcf1c843128fbfee11d135102856eae0472c51...d19cf5040529d516ec94bb679525315c644d581d)


### Regressions in System.Collections.CreateAddAndRemove&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[List - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04_LLVM=false_MonoAOT=true_MonoInterpreter=false/System.Collections.CreateAddAndRemove(String).List(Size%3a%20512).html>) | 119.71 μs | 141.17 μs | 1.18 | 0.04 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_20_2022/refs/heads/main_arm64_ubuntu%2020.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_Regression/System.Collections.CreateAddAndRemove(String).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CreateAddAndRemove&lt;String&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-eb556f62-6cb2-4139-9d6d-e19d7e9eb71375ffafd403b44c3b5/ae08bd68-d4c5-4f77-8467-75cd8912340c.zip?sv=2021-08-06&se=2023-01-14T08%3A01%3A53Z&sr=c&sp=rl&sig=%2F%2BcwYUGcsRFfEpzFpYLy6yDD7YnlAQF2WXZdADh8n2g%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-efd7e7e4-bb2e-48af-adfa-ca0cbdab22c136a028c666749c8ba/3f104520-3d49-4b32-98c0-b6feac9fd030.zip?sv=2021-08-06&se=2023-01-15T06%3A44%3A08Z&sr=c&sp=rl&sig=n7TuyfZ44vT%2FIdD9iZFphfpzuWBrnDgVW6Rh8iz9dBo%3D>)
### Histogram

#### System.Collections.CreateAddAndRemove&lt;String&gt;.List(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 141.16775189028314 > 124.8716849313447.
IsChangePoint: Marked as a change because one of 10/19/2022 10:12:35 AM, 11/2/2022 9:35:40 AM, 11/15/2022 6:47:45 PM, 12/15/2022 2:06:03 PM, 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 -24.937358755869894 (T) = (0 -136577.93932867443) / Math.Sqrt((4332243.969535254 / (26)) + (2342444.937538202 / (11))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (11) - 2, .025) and -0.12674930958444974 = (121214.13180989212 - 136577.93932867443) / 121214.13180989212 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	53bcf1c843128fbfee11d135102856eae0472c51
Compare	d19cf5040529d516ec94bb679525315c644d581d
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ArrayCopy2D - Duration of single invocation	1.24 μs	1.46 μs	1.18	0.02	False
ArrayCopy3D - Duration of single invocation	1.23 μs	1.46 μs	1.19	0.02	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
ImmutableArray - Duration of single invocation	1.98 μs	2.16 μs	1.09	0.03	False
ReadOnlyMemory - Duration of single invocation	1.94 μs	2.11 μs	1.09	0.03	False
Array - Duration of single invocation	1.98 μs	2.14 μs	1.08	0.03	False
List - Duration of single invocation	1.92 μs	2.10 μs	1.09	0.03	False
Memory - Duration of single invocation	1.94 μs	2.12 μs	1.09	0.03	False
Span - Duration of single invocation	1.93 μs	2.11 μs	1.09	0.03	False
ReadOnlySpan - Duration of single invocation	1.92 μs	2.09 μs	1.09	0.03	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
LessThanAnyBenchmark - Duration of single invocation	7.93 ns	8.99 ns	1.13	0.10	False
AbsBenchmark - Duration of single invocation	8.13 ns	9.16 ns	1.13	0.10	False
AndNotBenchmark - Duration of single invocation	13.54 ns	15.28 ns	1.13	0.12	False
EqualsAnyBenchmark - Duration of single invocation	7.95 ns	9.14 ns	1.15	0.06	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
List - Duration of single invocation	619.28 ns	734.51 ns	1.19	0.02	False
ImmutableArray - Duration of single invocation	667.42 ns	767.19 ns	1.15	0.02	False
Array - Duration of single invocation	661.44 ns	769.02 ns	1.16	0.02	False

[Perf] Linux/arm64: 18 Regressions on 12/15/2022 8:20:21 PM #10954

Description

Run Information

Regressions in System.Tests.Perf_Array

Repro

Payloads

Histogram

System.Tests.Perf_Array.ArrayCopy2D

Description of detection logic

Description of detection logic

Docs

Regressions in System.Collections.CopyTo<String>

Repro

Payloads

Histogram

System.Collections.CopyTo<String>.ImmutableArray(Size: 2048)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<UInt64>

Repro

Payloads

Histogram

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<UInt64>.LessThanAnyBenchmark

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Collections.CopyTo<Int32>

Repro

Payloads

Histogram

System.Collections.CopyTo<Int32>.List(Size: 2048)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Numerics.Tests.Perf_BigInteger

Repro

Payloads

Histogram

System.Numerics.Tests.Perf_BigInteger.GreatestCommonDivisor(arguments: 16,16 bits)

Description of detection logic

Docs

Run Information

Regressions in System.Collections.CreateAddAndRemove<String>

Repro

Payloads

Histogram

System.Collections.CreateAddAndRemove<String>.List(Size: 512)

Description of detection logic

Docs

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