Regressions in System.Text.RegularExpressions

### Run Information

Architecture | x64
-- | --
OS | Windows 10.0.19042
Baseline | [fb36ccef4bab6bf69d890c30978daccdb62b5839](https://github.com/dotnet/runtime/commit/fb36ccef4bab6bf69d890c30978daccdb62b5839)
Compare | [e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842](https://github.com/dotnet/runtime/commit/e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fb36ccef4bab6bf69d890c30978daccdb62b5839...e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern%3a%20%22.%7b0%2c2%7d(Tom%7cSawyer%7cHuckleberry%7cFinn)%22%2c%20Options%3a%20Compiled).html>) | 332.03 ms | 416.51 ms | 1.25 | 0.01 | False | | |
[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern%3a%20%22(%3fi)Twain%22%2c%20Options%3a%20NonBacktracking).html>) | 7.07 ms | 7.66 ms | 1.08 | 0.00 | False | | |
[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern%3a%20%22.%7b2%2c4%7d(Tom%7cSawyer%7cHuckleberry%7cFinn)%22%2c%20Options%3a%20Compiled).html>) | 339.16 ms | 422.09 ms | 1.24 | 0.00 | False | | |
[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern%3a%20%22(%3fi)Tom%7cSawyer%7cHuckleberry%7cFinn%22%2c%20Options%3a%20NonBacktracking).html>) | 84.12 ms | 88.83 ms | 1.06 | 0.05 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig_3.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig_4.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig*'
```

### Related Issues

#### Regressions

* [[Perf] Windows/x64: 25 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9386>)
* [[Perf] Windows/x64: 6 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9341>)
* [[Perf] Alpine/x64: 4 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9323>)
* [[Perf] Linux/x64: 11 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9306>)
#### Improvements
* [[Perf] Linux/x64: 4 Improvements on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9335>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-300139e8-96ad-4110-85b9-abae5821cc00d5517a1d4644032a2/5bfaf753-20a2-492a-aa44-525542a113a8.zip?sv=2021-08-06&se=2022-11-25T22%3A42%3A58Z&sr=c&sp=rl&sig=VSzNiWfF5fMY1Cg2BTn%2FpShGm04N7pH%2FEZCsRN23rug%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9fa6d3f1-1ba8-4ad0-a210-26687da72604788a79cd2934d9ab0/99554f6e-cef8-446f-a80c-fac8f8587131.zip?sv=2021-08-06&se=2022-11-26T09%3A17%3A17Z&sr=c&sp=rl&sig=YU4igaq1%2B5DVH%2FHrZqlIcLZThFMCJdc3RC0qVFR93MI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/11_01_2022/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern- -(-i)Tom-Sawyer-Huckleberry-Finn-, Options- NonBacktracking).txt?sv=2018-03-28&sr=c&sig=JoytaT70%2ByX0ce090BDZwAg8TDntVqLeANIlSNxVryw%3D&se=2022-11-24T00%3A17%3A57Z&sp=racwdl>)
#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

```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.
IsRegressionWindowed: Marked as regression because 416.5054333333333 > 348.4545274038462.
IsChangePoint: Marked as a change because one of 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -579.2051150485486 (T) = (0 -416808462.26582944) / Math.Sqrt((29667906565.438564 / (30)) + (431109292014.0141 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.2560340022183109 = (331844887.5824176 - 416808462.26582944) / 331844887.5824176 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.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: "(?i)Twain", Options: NonBacktracking)

```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.
IsRegressionWindowed: Marked as regression because 7.6602848484848485 > 7.422380485714287.
IsChangePoint: Marked as a change because one of 8/17/2022 2:11:12 PM, 10/11/2022 8:42:28 PM, 10/25/2022 2:34:53 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -18.390301801937913 (T) = (0 -7601105.116898116) / Math.Sqrt((7020278732.863089 / (21)) + (10510234808.502586 / (30))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (30) - 2, .025) and -0.06758424314030985 = (7119911.300432262 - 7601105.116898116) / 7119911.300432262 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.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{2,4}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

```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.
IsRegressionWindowed: Marked as regression because 422.08876923076923 > 356.0478467307693.
IsChangePoint: Marked as a change because one of 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -432.2606998714831 (T) = (0 -422918163.37345195) / Math.Sqrt((16255806192.92972 / (30)) + (778394737481.3641 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.24721332168943 = (339090479.56654465 - 422918163.37345195) / 339090479.56654465 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.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: "(?i)Tom|Sawyer|Huckleberry|Finn", Options: NonBacktracking)

```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.
IsRegressionWindowed: Marked as regression because 88.82956166666668 > 88.30194718749999.
IsChangePoint: Marked as a change because one of 8/16/2022 10:54:40 PM, 9/3/2022 11:44:47 AM, 9/9/2022 3:12:19 AM, 10/25/2022 7:09:53 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -19.969261603093507 (T) = (0 -88999508.19202349) / Math.Sqrt((581619626110.0212 / (22)) + (893915401380.7828 / (29))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (29) - 2, .025) and -0.05673809283385816 = (84220970.92511655 - 88999508.19202349) / 84220970.92511655 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 | Windows 10.0.19042
Baseline | [fb36ccef4bab6bf69d890c30978daccdb62b5839](https://github.com/dotnet/runtime/commit/fb36ccef4bab6bf69d890c30978daccdb62b5839)
Compare | [e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842](https://github.com/dotnet/runtime/commit/e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fb36ccef4bab6bf69d890c30978daccdb62b5839...e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Common

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[OneNodeBacktracking - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.OneNodeBacktracking(Options%3a%20Compiled).html>) | 73.39 ns | 86.83 ns | 1.18 | 0.08 | False | | |
[Backtracking - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options%3a%20IgnoreCase%2c%20Compiled).html>) | 123.89 ns | 138.00 ns | 1.11 | 0.10 | False | | |
[Backtracking - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options%3a%20Compiled).html>) | 107.89 ns | 116.85 ns | 1.08 | 0.09 | False | | |
[IP_IsMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsMatch(Options%3a%20IgnoreCase%2c%20Compiled).html>) | 105.58 ns | 128.33 ns | 1.22 | 0.06 | False | | |
[Uri_IsMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.Uri_IsMatch(Options%3a%20None).html>) | 288.43 ns | 311.47 ns | 1.08 | 0.13 | False | | |
[MatchesWord - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchesWord(Options%3a%20None).html>) | 1.15 μs | 1.31 μs | 1.14 | 0.09 | False | | |
[IP_IsMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsMatch(Options%3a%20None).html>) | 623.64 ns | 688.23 ns | 1.10 | 0.04 | False | | |
[OneNodeBacktracking - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.OneNodeBacktracking(Options%3a%20IgnoreCase%2c%20Compiled).html>) | 72.12 ns | 81.15 ns | 1.13 | 0.12 | False | | |
[MatchesBoundary - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchesBoundary(Options%3a%20None).html>) | 119.32 μs | 141.46 μs | 1.19 | 0.15 | False | | |
[IP_IsNotMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsNotMatch(Options%3a%20IgnoreCase%2c%20Compiled).html>) | 105.63 ns | 127.01 ns | 1.20 | 0.07 | False | | |
[Uri_IsNotMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.Uri_IsNotMatch(Options%3a%20None).html>) | 290.86 ns | 326.04 ns | 1.12 | 0.24 | False | | |
[IP_IsNotMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsNotMatch(Options%3a%20None).html>) | 617.02 ns | 688.38 ns | 1.12 | 0.03 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_3.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_4.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_5.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_6.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_7.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_8.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_9.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_10.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_11.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_12.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Common*'
```

### Related Issues

#### Regressions

* [[Perf] Windows/x64: 25 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9386>)
* [[Perf] Windows/x64: 6 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9341>)
* [[Perf] Alpine/x64: 4 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9323>)
* [[Perf] Linux/x64: 11 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9306>)
#### Improvements
* [[Perf] Linux/x64: 4 Improvements on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9335>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-300139e8-96ad-4110-85b9-abae5821cc00d5517a1d4644032a2/5bfaf753-20a2-492a-aa44-525542a113a8.zip?sv=2021-08-06&se=2022-11-25T22%3A42%3A58Z&sr=c&sp=rl&sig=VSzNiWfF5fMY1Cg2BTn%2FpShGm04N7pH%2FEZCsRN23rug%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9fa6d3f1-1ba8-4ad0-a210-26687da72604788a79cd2934d9ab0/99554f6e-cef8-446f-a80c-fac8f8587131.zip?sv=2021-08-06&se=2022-11-26T09%3A17%3A17Z&sr=c&sp=rl&sig=YU4igaq1%2B5DVH%2FHrZqlIcLZThFMCJdc3RC0qVFR93MI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/11_01_2022/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsNotMatch(Options- None).txt?sv=2018-03-28&sr=c&sig=JoytaT70%2ByX0ce090BDZwAg8TDntVqLeANIlSNxVryw%3D&se=2022-11-24T00%3A17%3A57Z&sp=racwdl>)
#### System.Text.RegularExpressions.Tests.Perf_Regex_Common.OneNodeBacktracking(Options: Compiled)

```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.
IsRegressionWindowed: Marked as regression because 86.8275696278143 > 78.09999538957418.
IsChangePoint: Marked as a change because one of 8/17/2022 2:11:12 PM, 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -21.57518390726645 (T) = (0 -86.48821966813284) / Math.Sqrt((2.7830911020001428 / (30)) + (3.528920341681947 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.14599783051026738 = (75.46979354195031 - 86.48821966813284) / 75.46979354195031 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.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options: IgnoreCase, Compiled)

```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.
IsRegressionWindowed: Marked as regression because 138.00026131064894 > 130.43276501654353.
IsChangePoint: Marked as a change because one of 8/17/2022 11:40:52 AM, 9/13/2022 12:23:36 PM, 9/22/2022 3:16:12 AM, 10/1/2022 2:31:50 PM, 10/11/2022 2:16:14 AM, 10/26/2022 2:14:52 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -12.988746098933982 (T) = (0 -137.91943666639156) / Math.Sqrt((4.155644390535771 / (27)) + (28.28187700971305 / (24))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (24) - 2, .025) and -0.1219621062533704 = (122.92700074065202 - 137.91943666639156) / 122.92700074065202 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.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options: Compiled)

```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.
IsRegressionWindowed: Marked as regression because 116.85494054206478 > 113.17838674501087.
IsChangePoint: Marked as a change because one of 8/30/2022 3:47:49 PM, 9/9/2022 3:12:19 AM, 9/23/2022 1:16:35 AM, 10/26/2022 2:14:52 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -7.830654846009884 (T) = (0 -113.71766160363575) / Math.Sqrt((0.9376591043423428 / (27)) + (17.022240467626517 / (24))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (24) - 2, .025) and -0.06314603557067641 = (106.96335009385074 - 113.71766160363575) / 106.96335009385074 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.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsMatch(Options: IgnoreCase, Compiled)

```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.
IsRegressionWindowed: Marked as regression because 128.32724241101164 > 111.00532349382794.
IsChangePoint: Marked as a change because one of 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -12.878304122450157 (T) = (0 -130.65359927667345) / Math.Sqrt((36.98744598474446 / (30)) + (45.387524679702196 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.22189126668465434 = (106.92735338977795 - 130.65359927667345) / 106.92735338977795 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.Text.RegularExpressions.Tests.Perf_Regex_Common.Uri_IsMatch(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 311.4705102917103 > 304.4809632118888.
IsChangePoint: Marked as a change because one of 10/25/2022 2:34:53 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -12.838441152666068 (T) = (0 -318.5006447564052) / Math.Sqrt((31.157663241228725 / (21)) + (100.31298089502344 / (30))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (30) - 2, .025) and -0.09717079409603198 = (290.2926750058276 - 318.5006447564052) / 290.2926750058276 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.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchesWord(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 1.3148710887082182 > 1.2113325437083777.
IsChangePoint: Marked as a change because one of 9/9/2022 3:12:19 AM, 9/13/2022 12:23:36 PM, 9/23/2022 1:16:35 AM, 9/28/2022 11:19:50 AM, 10/26/2022 4:56:52 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -9.42682913087762 (T) = (0 -1236.5753605706625) / Math.Sqrt((883.969054626842 / (28)) + (1130.592221572581 / (23))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (28) + (23) - 2, .025) and -0.07353049916484425 = (1151.8772513055376 - 1236.5753605706625) / 1151.8772513055376 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.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsMatch(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 688.2267373119328 > 649.9391753240619.
IsChangePoint: Marked as a change because one of 8/30/2022 3:47:49 PM, 10/26/2022 7:11:30 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -29.20932783638292 (T) = (0 -707.8359076951109) / Math.Sqrt((75.79268832683788 / (25)) + (136.36896277319332 / (26))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (26) - 2, .025) and -0.13471062546622675 = (623.8030135694528 - 707.8359076951109) / 623.8030135694528 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.Text.RegularExpressions.Tests.Perf_Regex_Common.OneNodeBacktracking(Options: IgnoreCase, Compiled)

```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.
IsRegressionWindowed: Marked as regression because 81.15480073905125 > 76.024892831368.
IsChangePoint: Marked as a change because one of 8/17/2022 2:11:12 PM, 9/20/2022 6:55:31 AM, 9/29/2022 7:42:19 AM, 10/28/2022 6:19:52 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -11.456544689879665 (T) = (0 -81.29956025284886) / Math.Sqrt((6.233183332053246 / (40)) + (1.2138580131830443 / (11))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (40) + (11) - 2, .025) and -0.07840335594375587 = (75.38882349053914 - 81.29956025284886) / 75.38882349053914 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.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchesBoundary(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 141.45801715176714 > 123.90950348505656.
IsChangePoint: Marked as a change because one of 10/12/2022 1:44:25 PM, 10/27/2022 5:53:52 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -4.621045369855946 (T) = (0 -136293.58076672902) / Math.Sqrt((15406308.356509058 / (32)) + (169005352.30472982 / (19))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (19) - 2, .025) and -0.11584827198857087 = (122143.47074610608 - 136293.58076672902) / 122143.47074610608 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.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsNotMatch(Options: IgnoreCase, Compiled)

```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.
IsRegressionWindowed: Marked as regression because 127.0125895748806 > 110.91068039684593.
IsChangePoint: Marked as a change because one of 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -16.919774417071256 (T) = (0 -131.36875012958367) / Math.Sqrt((2.499156880497458 / (30)) + (47.21611114095977 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.2448183906845512 = (105.53246249626928 - 131.36875012958367) / 105.53246249626928 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.Text.RegularExpressions.Tests.Perf_Regex_Common.Uri_IsNotMatch(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 326.040303488356 > 305.709328866613.
IsChangePoint: Marked as a change because one of 8/23/2022 11:46:46 PM, 10/25/2022 2:34:53 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -14.36289221847867 (T) = (0 -320.0236477338281) / Math.Sqrt((59.920830731501 / (21)) + (16.947517034333945 / (30))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (30) - 2, .025) and -0.09048668039739656 = (293.46864430953406 - 320.0236477338281) / 293.46864430953406 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.Text.RegularExpressions.Tests.Perf_Regex_Common.IP_IsNotMatch(Options: None)

```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.
IsRegressionWindowed: Marked as regression because 688.3812940853878 > 650.146447853521.
IsChangePoint: Marked as a change because one of 8/30/2022 3:47:49 PM, 10/26/2022 7:11:30 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -24.4078691693055 (T) = (0 -707.7392342546108) / Math.Sqrt((147.5822436663469 / (25)) + (149.2207036926858 / (26))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (26) - 2, .025) and -0.13336796992054428 = (624.4567104752638 - 707.7392342546108) / 624.4567104752638 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 | Windows 10.0.19042
Baseline | [fb36ccef4bab6bf69d890c30978daccdb62b5839](https://github.com/dotnet/runtime/commit/fb36ccef4bab6bf69d890c30978daccdb62b5839)
Compare | [e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842](https://github.com/dotnet/runtime/commit/e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fb36ccef4bab6bf69d890c30978daccdb62b5839...e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Cache

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IsMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total%3a%20400000%2c%20unique%3a%201%2c%20cacheSize%3a%2015).html>) | 41.58 ms | 46.34 ms | 1.11 | 0.37 | False | | |
[IsMatch - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total%3a%20400000%2c%20unique%3a%207%2c%20cacheSize%3a%2015).html>) | 53.54 ms | 59.27 ms | 1.11 | 0.30 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Cache_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Cache_2.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_01_2022/refs/heads/main_x64_Windows%2010.0.19042/amd_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Cache.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Cache*'
```

### Related Issues

#### Regressions

* [[Perf] Alpine/x64: 8 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9394>)
* [[Perf] Windows/x64: 25 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9386>)
* [[Perf] Windows/x64: 6 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9341>)
* [[Perf] Linux/x64: 11 Regressions on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9306>)
#### Improvements
* [[Perf] Linux/x64: 4 Improvements on 10/27/2022 4:20:56 AM](<https://github.com/dotnet/perf-autofiling-issues/issues/9335>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-300139e8-96ad-4110-85b9-abae5821cc00d5517a1d4644032a2/5bfaf753-20a2-492a-aa44-525542a113a8.zip?sv=2021-08-06&se=2022-11-25T22%3A42%3A58Z&sr=c&sp=rl&sig=VSzNiWfF5fMY1Cg2BTn%2FpShGm04N7pH%2FEZCsRN23rug%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9fa6d3f1-1ba8-4ad0-a210-26687da72604788a79cd2934d9ab0/99554f6e-cef8-446f-a80c-fac8f8587131.zip?sv=2021-08-06&se=2022-11-26T09%3A17%3A17Z&sr=c&sp=rl&sig=YU4igaq1%2B5DVH%2FHrZqlIcLZThFMCJdc3RC0qVFR93MI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/11_01_2022/refs/heads/main_x64_Windows 10.0.19042/amd/System.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total- 400000, unique- 7, cacheSize- 15).txt?sv=2018-03-28&sr=c&sig=JoytaT70%2ByX0ce090BDZwAg8TDntVqLeANIlSNxVryw%3D&se=2022-11-24T00%3A17%3A57Z&sp=racwdl>)
#### System.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total: 400000, unique: 1, cacheSize: 15)

```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.
IsRegressionWindowed: Marked as regression because 46.342455 > 43.24550806985295.
IsChangePoint: Marked as a change because one of 9/1/2022 9:35:26 AM, 9/23/2022 1:16:35 AM, 10/27/2022 12:34:03 AM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -10.651290823344734 (T) = (0 -48154098.06689343) / Math.Sqrt((3565666914879.7876 / (30)) + (4421094351846.123 / (21))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (21) - 2, .025) and -0.14540495601817602 = (42041112.022331156 - 48154098.06689343) / 42041112.022331156 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.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total: 400000, unique: 7, cacheSize: 15)

```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.
IsRegressionWindowed: Marked as regression because 59.273963333333334 > 57.1792501875.
IsChangePoint: Marked as a change because one of 8/26/2022 9:04:17 AM, 10/26/2022 2:14:52 PM, 11/1/2022 6:58:35 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 6:58:35 AM.
IsRegressionStdDev: Marked as regression because -7.40053137352866 (T) = (0 -59191082.38388941) / Math.Sqrt((4451398538425.818 / (27)) + (6127025631905.805 / (24))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (27) + (24) - 2, .025) and -0.0881897846077196 = (54394080.16978136 - 59191082.38388941) / 54394080.16978136 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	Windows 10.0.19042
Baseline	fb36ccef4bab6bf69d890c30978daccdb62b5839
Compare	e1ddbca5a008b4b15e8e6b309cbab12ba8b9b842
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Count - Duration of single invocation	332.03 ms	416.51 ms	1.25	0.01	False
Count - Duration of single invocation	7.07 ms	7.66 ms	1.08	0.00	False
Count - Duration of single invocation	339.16 ms	422.09 ms	1.24	0.00	False
Count - Duration of single invocation	84.12 ms	88.83 ms	1.06	0.05	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
OneNodeBacktracking - Duration of single invocation	73.39 ns	86.83 ns	1.18	0.08	False
Backtracking - Duration of single invocation	123.89 ns	138.00 ns	1.11	0.10	False
Backtracking - Duration of single invocation	107.89 ns	116.85 ns	1.08	0.09	False
IP_IsMatch - Duration of single invocation	105.58 ns	128.33 ns	1.22	0.06	False
Uri_IsMatch - Duration of single invocation	288.43 ns	311.47 ns	1.08	0.13	False
MatchesWord - Duration of single invocation	1.15 μs	1.31 μs	1.14	0.09	False
IP_IsMatch - Duration of single invocation	623.64 ns	688.23 ns	1.10	0.04	False
OneNodeBacktracking - Duration of single invocation	72.12 ns	81.15 ns	1.13	0.12	False
MatchesBoundary - Duration of single invocation	119.32 μs	141.46 μs	1.19	0.15	False
IP_IsNotMatch - Duration of single invocation	105.63 ns	127.01 ns	1.20	0.07	False
Uri_IsNotMatch - Duration of single invocation	290.86 ns	326.04 ns	1.12	0.24	False
IP_IsNotMatch - Duration of single invocation	617.02 ns	688.38 ns	1.12	0.03	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
IsMatch - Duration of single invocation	41.58 ms	46.34 ms	1.11	0.37	False
IsMatch - Duration of single invocation	53.54 ms	59.27 ms	1.11	0.30	False

Regressions in System.Text.RegularExpressions #77910

Description

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Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig

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Regressions

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Payloads

Histogram

Edge Detector Info

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_Leipzig.Count(Pattern: ".{0,2}(Tom|Sawyer|Huckleberry|Finn)", Options: Compiled)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Common

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Regressions

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Payloads

Histogram

Edge Detector Info

System.Text.RegularExpressions.Tests.Perf_Regex_Common.OneNodeBacktracking(Options: Compiled)

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

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.Text.RegularExpressions.Tests.Perf_Regex_Cache

Repro

Related Issues

Regressions

Improvements

Payloads

Histogram

Edge Detector Info

System.Text.RegularExpressions.Tests.Perf_Regex_Cache.IsMatch(total: 400000, unique: 1, cacheSize: 15)

Description of detection logic

Description of detection logic

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