[Perf] Linux/x64: 16 Regressions on 9/22/2022 3:16:12 AM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266](https://github.com/dotnet/runtime/commit/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266)
Compare | [b5b2af07114a7e94c82676ddd23ff51af1bed0d5](https://github.com/dotnet/runtime/commit/b5b2af07114a7e94c82676ddd23ff51af1bed0d5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266...b5b2af07114a7e94c82676ddd23ff51af1bed0d5)


### Regressions in System.Collections.ContainsTrue&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Queue - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).Queue(Size%3a%20512).html>) | 969.31 μs | 1.10 ms | 1.13 | 0.07 | False | | |
[ImmutableArray - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).ImmutableArray(Size%3a%20512).html>) | 996.73 μs | 1.11 ms | 1.12 | 0.05 | False | | |
[ICollection - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).ICollection(Size%3a%20512).html>) | 967.59 μs | 1.06 ms | 1.10 | 0.05 | False | | |
[List - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).List(Size%3a%20512).html>) | 954.73 μs | 1.06 ms | 1.11 | 0.06 | False | | |
[Array - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).Array(Size%3a%20512).html>) | 974.99 μs | 1.07 ms | 1.10 | 0.06 | False | | |
[Stack - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue(Int32).Stack(Size%3a%20512).html>) | 1.00 ms | 1.24 ms | 1.23 | 0.06 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/09_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Collections.ContainsTrue(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.ContainsTrue&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-72086ae2-9155-4c09-bc4a-8d17ab1b8045411d8596a8749efa8/86f6d52e-d48a-4bfe-8a72-80cb538eec94.zip?sv=2021-08-06&se=2022-10-21T19%3A57%3A57Z&sr=c&sp=rl&sig=mhFvOlGBVMGMNZNT1uMto9acogk3fy%2BgfxmJbcHg%2BWU%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-3a202cfd-9437-4ab0-aab0-fbda0b5e8ffb45e27fc5a9d4a4c84/e3ac8cd2-fdfa-4da9-8c02-a4e3afefee1e.zip?sv=2021-08-06&se=2022-10-22T16%3A33%3A07Z&sr=c&sp=rl&sig=Mw2xdWXBFBNuM%2BndPSXFNlHYNDUUmHKwq0TJ5p0xuDI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/09_27_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsTrue-Int32-.Stack(Size- 512).txt?sv=2018-03-28&sr=c&sig=LG%2FuZBS96wm3PV3z1k%2FG4jh6a9y8FAY3G0pihsGACTQ%3D&se=2022-10-23T12%3A15%3A03Z&sp=racwdl>)
#### System.Collections.ContainsTrue&lt;Int32&gt;.Queue(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 1.095966200892857 > 1010.798569984976.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -26.205242060142314 (T) = (0 -1082176.5961467223) / Math.Sqrt((134557800.542629 / (33)) + (378753722.89546967 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11677096832909976 = (969022.8586134029 - 1082176.5961467223) / 969022.8586134029 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsTrue&lt;Int32&gt;.ImmutableArray(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 1.1139794651785715 > 1.060484347207031.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -27.791974606900073 (T) = (0 -1115382.3246755877) / Math.Sqrt((180256514.8127183 / (33)) + (235012253.979763 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.10483220306009597 = (1009549.0714212264 - 1115382.3246755877) / 1009549.0714212264 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsTrue&lt;Int32&gt;.ICollection(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 1.0617160416666667 > 1018.8446187011718.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -16.056018293701424 (T) = (0 -1087710.4426824627) / Math.Sqrt((185033592.69745567 / (33)) + (1162193806.342326 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11694145311763579 = (973829.4157195234 - 1087710.4426824627) / 973829.4157195234 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsTrue&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 1.0611418856944443 > 1018.2846668750002.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -35.482093782068404 (T) = (0 -1074002.2283184354) / Math.Sqrt((69967824.32398583 / (33)) + (179800464.4794185 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11025724102303357 = (967345.3940537317 - 1074002.2283184354) / 967345.3940537317 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsTrue&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 1.0702191419642857 > 1023.6990125195313.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -30.120564854575687 (T) = (0 -1086000.919079096) / Math.Sqrt((291634961.6495431 / (33)) + (86090478.21488371 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.10701630982952783 = (981016.1868765348 - 1086000.919079096) / 981016.1868765348 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsTrue&lt;Int32&gt;.Stack(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 1.2352883976648354 > 1024.4168104882813.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -60.858087292552526 (T) = (0 -1236941.1502558445) / Math.Sqrt((337610251.7351471 / (33)) + (203005793.13338426 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.2641636960719056 = (978465.9645735368 - 1236941.1502558445) / 978465.9645735368 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>
### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266](https://github.com/dotnet/runtime/commit/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266)
Compare | [b5b2af07114a7e94c82676ddd23ff51af1bed0d5](https://github.com/dotnet/runtime/commit/b5b2af07114a7e94c82676ddd23ff51af1bed0d5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266...b5b2af07114a7e94c82676ddd23ff51af1bed0d5)


### Regressions in System.Memory.SequenceReader

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[TryReadTo - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.SequenceReader.TryReadTo.html>) | 4.81 μs | 5.38 μs | 1.12 | 0.02 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/09_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Memory.SequenceReader.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Memory.SequenceReader*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-72086ae2-9155-4c09-bc4a-8d17ab1b8045411d8596a8749efa8/86f6d52e-d48a-4bfe-8a72-80cb538eec94.zip?sv=2021-08-06&se=2022-10-21T19%3A57%3A57Z&sr=c&sp=rl&sig=mhFvOlGBVMGMNZNT1uMto9acogk3fy%2BgfxmJbcHg%2BWU%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-3a202cfd-9437-4ab0-aab0-fbda0b5e8ffb45e27fc5a9d4a4c84/e3ac8cd2-fdfa-4da9-8c02-a4e3afefee1e.zip?sv=2021-08-06&se=2022-10-22T16%3A33%3A07Z&sr=c&sp=rl&sig=Mw2xdWXBFBNuM%2BndPSXFNlHYNDUUmHKwq0TJ5p0xuDI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/09_27_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.SequenceReader.TryReadTo.txt?sv=2018-03-28&sr=c&sig=LG%2FuZBS96wm3PV3z1k%2FG4jh6a9y8FAY3G0pihsGACTQ%3D&se=2022-10-23T12%3A15%3A03Z&sp=racwdl>)
#### System.Memory.SequenceReader.TryReadTo

```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 5.378923124141483 > 5.053520181621476.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -51.38447919574725 (T) = (0 -5367.488921550735) / Math.Sqrt((2937.7007674825045 / (32)) + (472.35950356068855 / (26))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (26) - 2, .025) and -0.11159539603981007 = (4828.635437563927 - 5367.488921550735) / 4828.635437563927 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266](https://github.com/dotnet/runtime/commit/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266)
Compare | [b5b2af07114a7e94c82676ddd23ff51af1bed0d5](https://github.com/dotnet/runtime/commit/b5b2af07114a7e94c82676ddd23ff51af1bed0d5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266...b5b2af07114a7e94c82676ddd23ff51af1bed0d5)


### Regressions in System.Collections.ContainsFalse&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Stack - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).Stack(Size%3a%20512).html>) | 1.89 ms | 2.38 ms | 1.26 | 0.06 | False | | |
[ImmutableArray - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).ImmutableArray(Size%3a%20512).html>) | 1.93 ms | 2.14 ms | 1.11 | 0.03 | False | | |
[Array - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).Array(Size%3a%20512).html>) | 1.90 ms | 2.11 ms | 1.11 | 0.03 | False | | |
[List - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).List(Size%3a%20512).html>) | 1.89 ms | 2.10 ms | 1.11 | 0.05 | False | | |
[Queue - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).Queue(Size%3a%20512).html>) | 1.89 ms | 2.23 ms | 1.18 | 0.06 | False | | |
[ICollection - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse(Int32).ICollection(Size%3a%20512).html>) | 1.87 ms | 2.10 ms | 1.12 | 0.05 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/09_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Collections.ContainsFalse(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.ContainsFalse&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-72086ae2-9155-4c09-bc4a-8d17ab1b8045411d8596a8749efa8/86f6d52e-d48a-4bfe-8a72-80cb538eec94.zip?sv=2021-08-06&se=2022-10-21T19%3A57%3A57Z&sr=c&sp=rl&sig=mhFvOlGBVMGMNZNT1uMto9acogk3fy%2BgfxmJbcHg%2BWU%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-3a202cfd-9437-4ab0-aab0-fbda0b5e8ffb45e27fc5a9d4a4c84/e3ac8cd2-fdfa-4da9-8c02-a4e3afefee1e.zip?sv=2021-08-06&se=2022-10-22T16%3A33%3A07Z&sr=c&sp=rl&sig=Mw2xdWXBFBNuM%2BndPSXFNlHYNDUUmHKwq0TJ5p0xuDI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/09_27_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Collections.ContainsFalse-Int32-.ICollection(Size- 512).txt?sv=2018-03-28&sr=c&sig=LG%2FuZBS96wm3PV3z1k%2FG4jh6a9y8FAY3G0pihsGACTQ%3D&se=2022-10-23T12%3A15%3A03Z&sp=racwdl>)
#### System.Collections.ContainsFalse&lt;Int32&gt;.Stack(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 2.3842154708333334 > 1.9866159997796478.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -63.97195320199993 (T) = (0 -2394094.2410446103) / Math.Sqrt((1695724547.8362103 / (33)) + (190835740.57041073 / (25))) is less than -2.0032407188469383 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (25) - 2, .025) and -0.2583031159565782 = (1902637.1394022887 - 2394094.2410446103) / 1902637.1394022887 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsFalse&lt;Int32&gt;.ImmutableArray(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 2.1394566171875 > 2.0256352184960935.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -31.077029944721016 (T) = (0 -2151332.1590478206) / Math.Sqrt((360162614.46956015 / (33)) + (997867569.4428535 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11286796194600314 = (1933142.3247066252 - 2151332.1590478206) / 1933142.3247066252 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsFalse&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 2.1087881843750003 > 1.9809466521310766.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -45.259498036275815 (T) = (0 -2113783.74757238) / Math.Sqrt((353745729.22009766 / (33)) + (319361059.55712956 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11444507736727372 = (1896714.1499390076 - 2113783.74757238) / 1896714.1499390076 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsFalse&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 2.1026052706473215 > 1.9608499316145835.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -68.80938666641624 (T) = (0 -2099614.6035013716) / Math.Sqrt((211620946.8627083 / (33)) + (92498111.32462098 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11542629051873408 = (1882342.7611025164 - 2099614.6035013716) / 1882342.7611025164 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsFalse&lt;Int32&gt;.Queue(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 2.2304079871651785 > 2.008788108359375.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -23.59913129326589 (T) = (0 -2147578.562214543) / Math.Sqrt((1116474284.4023762 / (33)) + (1587306697.1320746 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11986933064211758 = (1917704.5959309835 - 2147578.562214543) / 1917704.5959309835 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Collections.ContainsFalse&lt;Int32&gt;.ICollection(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 2.0979382890625 > 1.9806727393359376.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -42.85148744252998 (T) = (0 -2103699.1899045617) / Math.Sqrt((347858606.2090312 / (33)) + (396049417.258107 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.11533974964320046 = (1886151.005178054 - 2103699.1899045617) / 1886151.005178054 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266](https://github.com/dotnet/runtime/commit/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266)
Compare | [b5b2af07114a7e94c82676ddd23ff51af1bed0d5](https://github.com/dotnet/runtime/commit/b5b2af07114a7e94c82676ddd23ff51af1bed0d5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266...b5b2af07114a7e94c82676ddd23ff51af1bed0d5)


### Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Contains_ElementNotFound - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input%3a%20ICollection).html>) | 832.17 ns | 895.38 ns | 1.08 | 0.03 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/09_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_Regression/System.Linq.Tests.Perf_Enumerable.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Linq.Tests.Perf_Enumerable*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-72086ae2-9155-4c09-bc4a-8d17ab1b8045411d8596a8749efa8/86f6d52e-d48a-4bfe-8a72-80cb538eec94.zip?sv=2021-08-06&se=2022-10-21T19%3A57%3A57Z&sr=c&sp=rl&sig=mhFvOlGBVMGMNZNT1uMto9acogk3fy%2BgfxmJbcHg%2BWU%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-3a202cfd-9437-4ab0-aab0-fbda0b5e8ffb45e27fc5a9d4a4c84/e3ac8cd2-fdfa-4da9-8c02-a4e3afefee1e.zip?sv=2021-08-06&se=2022-10-22T16%3A33%3A07Z&sr=c&sp=rl&sig=Mw2xdWXBFBNuM%2BndPSXFNlHYNDUUmHKwq0TJ5p0xuDI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/09_27_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input- ICollection).txt?sv=2018-03-28&sr=c&sig=LG%2FuZBS96wm3PV3z1k%2FG4jh6a9y8FAY3G0pihsGACTQ%3D&se=2022-10-23T12%3A15%3A03Z&sp=racwdl>)
#### System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input: ICollection)

```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 895.3778104156972 > 849.9629668568364.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -29.21081282954959 (T) = (0 -892.9335262280066) / Math.Sqrt((168.6694102042165 / (33)) + (82.54061160444941 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.10395462812604744 = (808.8498417219853 - 892.9335262280066) / 808.8498417219853 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266](https://github.com/dotnet/runtime/commit/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266)
Compare | [b5b2af07114a7e94c82676ddd23ff51af1bed0d5](https://github.com/dotnet/runtime/commit/b5b2af07114a7e94c82676ddd23ff51af1bed0d5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266...b5b2af07114a7e94c82676ddd23ff51af1bed0d5)


### 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
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[LastIndexOfValue - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Int32).LastIndexOfValue(Size%3a%20512).html>) | 1.87 μs | 2.49 μs | 1.33 | 0.06 | False | | |
[IndexOfValue - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span(Int32).IndexOfValue(Size%3a%20512).html>) | 1.98 μs | 2.11 μs | 1.07 | 0.05 | False | | |

[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/09_27_2022/refs/heads/main_x64_ubuntu%2018.04_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 net6.0 --filter 'System.Memory.Span&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-72086ae2-9155-4c09-bc4a-8d17ab1b8045411d8596a8749efa8/86f6d52e-d48a-4bfe-8a72-80cb538eec94.zip?sv=2021-08-06&se=2022-10-21T19%3A57%3A57Z&sr=c&sp=rl&sig=mhFvOlGBVMGMNZNT1uMto9acogk3fy%2BgfxmJbcHg%2BWU%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-3a202cfd-9437-4ab0-aab0-fbda0b5e8ffb45e27fc5a9d4a4c84/e3ac8cd2-fdfa-4da9-8c02-a4e3afefee1e.zip?sv=2021-08-06&se=2022-10-22T16%3A33%3A07Z&sr=c&sp=rl&sig=Mw2xdWXBFBNuM%2BndPSXFNlHYNDUUmHKwq0TJ5p0xuDI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/09_27_2022/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true/System.Memory.Span-Int32-.IndexOfValue(Size- 512).txt?sv=2018-03-28&sr=c&sig=LG%2FuZBS96wm3PV3z1k%2FG4jh6a9y8FAY3G0pihsGACTQ%3D&se=2022-10-23T12%3A15%3A03Z&sp=racwdl>)
#### System.Memory.Span&lt;Int32&gt;.LastIndexOfValue(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 2.486075723145284 > 1.961551330630418.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -32.74534469892047 (T) = (0 -2378.1927078714825) / Math.Sqrt((666.1354551089895 / (33)) + (5810.079235983002 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.2737630503998014 = (1867.0605236390152 - 2378.1927078714825) / 1867.0605236390152 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Memory.Span&lt;Int32&gt;.IndexOfValue(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 2.1059525350629564 > 1.9711226404728943.
IsChangePoint: Marked as a change because one of 8/5/2022 10:47:59 PM, 9/21/2022 9:54:19 PM, 9/27/2022 7:01:57 AM falls between 9/18/2022 2:31:46 PM and 9/27/2022 7:01:57 AM.
IsRegressionStdDev: Marked as regression because -26.75366215584882 (T) = (0 -2108.271736496125) / Math.Sqrt((824.5871390603775 / (33)) + (1462.8924148464291 / (26))) is less than -2.0024654592901125 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (26) - 2, .025) and -0.1291609019154783 = (1867.1136530849672 - 2108.271736496125) / 1867.1136530849672 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>




Architecture	x64
OS	ubuntu 18.04
Baseline	34c522b7e9eaa9bddb6d93ba471cf1c7d4ff3266
Compare	b5b2af07114a7e94c82676ddd23ff51af1bed0d5
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Queue - Duration of single invocation	969.31 μs	1.10 ms	1.13	0.07	False
ImmutableArray - Duration of single invocation	996.73 μs	1.11 ms	1.12	0.05	False
ICollection - Duration of single invocation	967.59 μs	1.06 ms	1.10	0.05	False
List - Duration of single invocation	954.73 μs	1.06 ms	1.11	0.06	False
Array - Duration of single invocation	974.99 μs	1.07 ms	1.10	0.06	False
Stack - Duration of single invocation	1.00 ms	1.24 ms	1.23	0.06	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Stack - Duration of single invocation	1.89 ms	2.38 ms	1.26	0.06	False
ImmutableArray - Duration of single invocation	1.93 ms	2.14 ms	1.11	0.03	False
Array - Duration of single invocation	1.90 ms	2.11 ms	1.11	0.03	False
List - Duration of single invocation	1.89 ms	2.10 ms	1.11	0.05	False
Queue - Duration of single invocation	1.89 ms	2.23 ms	1.18	0.06	False
ICollection - Duration of single invocation	1.87 ms	2.10 ms	1.12	0.05	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
LastIndexOfValue - Duration of single invocation	1.87 μs	2.49 μs	1.33	0.06	False
IndexOfValue - Duration of single invocation	1.98 μs	2.11 μs	1.07	0.05	False

[Perf] Linux/x64: 16 Regressions on 9/22/2022 3:16:12 AM #77900

Description

performanceautofileropenedon Sep 27, 2022

Run Information

Regressions in System.Collections.ContainsTrue<Int32>

Repro

Payloads

Histogram

Edge Detector Info

System.Collections.ContainsTrue<Int32>.Queue(Size: 512)

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

Regressions in System.Memory.SequenceReader

Repro

Payloads

Histogram

Edge Detector Info

System.Memory.SequenceReader.TryReadTo

Description of detection logic

Docs

Run Information

Regressions in System.Collections.ContainsFalse<Int32>

Repro

Payloads

Histogram

Edge Detector Info

System.Collections.ContainsFalse<Int32>.Stack(Size: 512)

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.Linq.Tests.Perf_Enumerable

Repro

Payloads

Histogram

Edge Detector Info

System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input: ICollection)

Description of detection logic

Docs

Run Information

Regressions in System.Memory.Span<Int32>

Repro

Payloads

Histogram

Edge Detector Info

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

Description of detection logic

Description of detection logic

Docs

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performanceautofiler
openedon Sep 27, 2022