Regressions in System.Text.RegularExpressions

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [4838097db4280704f24e1d30a9705a586e58628f](https://github.com/dotnet/runtime/commit/4838097db4280704f24e1d30a9705a586e58628f)
Compare | [adb4c18f5bcf6587230afe04cc6b61e2477f8137](https://github.com/dotnet/runtime/commit/adb4c18f5bcf6587230afe04cc6b61e2477f8137)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4838097db4280704f24e1d30a9705a586e58628f...adb4c18f5bcf6587230afe04cc6b61e2477f8137)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fs).*%22%2c%20Options%3a%20Compiled).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.RegularExpressions/Perf.Regex.Industry.cs#L191-#L192>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 73.60 ns | 82.80 ns | 1.13 | 0.19 | False | | |
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fi)Sherlock%20Holmes%22%2c%20Options%3a%20Compiled).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.RegularExpressions/Perf.Regex.Industry.cs#L191-#L192>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 152.55 μs | 178.99 μs | 1.17 | 0.01 | True | | |
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fi)Sherlock%22%2c%20Options%3a%20Compiled).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.RegularExpressions/Perf.Regex.Industry.cs#L191-#L192>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 157.13 μs | 181.46 μs | 1.15 | 0.01 | True | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_18_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_18_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_18_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_3.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/01_18_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d26c1de0-d105-49a0-a2ad-db147f0c7c9e1e523b01e61493587/208cf0ee-44b5-4393-8f18-9f9f93821f54.zip?sv=2021-08-06&se=2024-02-04T03%3A37%3A35Z&sr=c&sp=rl&sig=%2BX9VPN%2FGk7FTnEW%2FZxg7Dh5u%2FY6U2wSITbAUNoXsLmw%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-6e2fd615-81d4-4e3b-9922-dbca4fa28bdb172075cb2fc49d094/d4051bdb-7280-413c-af70-94bf6574c005.zip?sv=2021-08-06&se=2024-02-05T08%3A31%3A38Z&sr=c&sp=rl&sig=dp4ePcdXX8peRdwt1UErXFnd2LCpSCvVetoxvb8q690%3D>)
### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?s).*", Options: Compiled)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: Compiled)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock", Options: Compiled)

#### ETL Files

#### Histogram

#### JIT Disasms



### 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>

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Regressions in System.Text.RegularExpressions #97166

performanceautofiler
openedon Jan 18, 2024

Run Information