Regressions in System.Collections.Sort<Int32>

### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [9ab00ef5c8904f28fba9b01b4fefd4ad672567fb](https://github.com/dotnet/runtime/commit/9ab00ef5c8904f28fba9b01b4fefd4ad672567fb)
Compare | [10438a57b888cbdc6dc15771dc662adde9fd6b14](https://github.com/dotnet/runtime/commit/10438a57b888cbdc6dc15771dc662adde9fd6b14)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9ab00ef5c8904f28fba9b01b4fefd4ad672567fb...10438a57b888cbdc6dc15771dc662adde9fd6b14)


### Regressions in System.Collections.Sort&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Array - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Collections.Sort(Int32).Array(Size%3a%20512).html>) | 5.49 μs | 6.01 μs | 1.10 | 0.24 | False | | |
[List - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Collections.Sort(Int32).List(Size%3a%20512).html>) | 5.49 μs | 6.37 μs | 1.16 | 0.17 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/06_23_2022/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Collections.Sort(Int32)_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/06_23_2022/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Collections.Sort(Int32)_2.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/06_23_2022/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Collections.Sort(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.Sort&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4be7f379-7a55-48ad-955e-8b833a53b35280235afc4ec4a5b9c/ff7bb131-f3c1-4477-971a-9d15f4385b31.zip?sv=2019-07-07&se=2022-07-16T17%3A08%3A57Z&sr=c&sp=rl&sig=ttAfCN3EiN64h%2B3tnCePLr5JPaycQfZ9KS%2B%2F6OOQSdM%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8f2328be-4167-4a36-bca1-43684cf6e87efe4d4c9af4a4a739d/4605d63c-8188-4d1f-a138-c44001a5a623.zip?sv=2019-07-07&se=2022-07-17T11%3A13%3A12Z&sr=c&sp=rl&sig=8KP6%2FiCVjayD%2FCu8V8%2FZNpRstla2rArRnmdF1k6NSUI%3D>)
### Histogram

#### System.Collections.Sort&lt;Int32&gt;.Array(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 6.012585555555557 > 5.747378230263158.
IsChangePoint: Marked as a change because one of 6/16/2022 10:45:33 PM, 6/23/2022 3:07:42 AM falls between 6/14/2022 10:05:19 AM and 6/23/2022 3:07:42 AM.
IsRegressionStdDev: Marked as regression because -15.026510107388873 (T) = (0 -6212.707966783625) / Math.Sqrt((29561.33241260086 / (21)) + (33639.99194715355 / (25))) is less than -2.0153675744421933 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (25) - 2, .025) and -0.14535986474704712 = (5424.241025029895 - 6212.707966783625) / 5424.241025029895 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.Sort&lt;Int32&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 6.367123333333333 > 5.7733494.
IsChangePoint: Marked as a change because one of 6/6/2022 12:57:23 AM, 6/16/2022 10:45:33 PM, 6/23/2022 3:07:42 AM falls between 6/14/2022 10:05:19 AM and 6/23/2022 3:07:42 AM.
IsRegressionStdDev: Marked as regression because -18.256655481072343 (T) = (0 -6290.907881769642) / Math.Sqrt((15144.937245487698 / (21)) + (38150.12749039728 / (23))) is less than -2.0180817028167235 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (23) - 2, .025) and -0.1649239776783329 = (5400.273324536833 - 6290.907881769642) / 5400.273324536833 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>


Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Regressions in System.Collections.Sort<Int32> #71214

Run Information