[Perf] Linux/arm64: 1 Regression on 1/5/2023 4:05:11 PM

[performanceautofiler[bot]]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	a2243718922e85370f137bdfa3e30a8eedebe954
Compare	05f0b1aac6e9542eaeaae05afe58a861439f2712
Diff	Diff

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	Baseline ETL	Compare ETL
[Count - Duration of single invocation](<https://pvscmdupload.z22.web.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%7cHolmes%7cWatson%7cIrene%7cAdler%7cJohn%7cBaker%22%2c%20Options%3a%20Compiled).html>)	2.96 ms	3.31 ms	1.12	0.00	False

Test Report

Repro

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*'

### Payloads [Baseline]() [Compare]() ### Histogram #### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock|Holmes|Watson|Irene|Adler|John|Baker", 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. IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline. IsRegressionWindowed: Marked as regression because 3.3066044624999997 > 3.11073281001202. IsChangePoint: Marked as a change because one of 1/5/2023 11:12:07 AM, 1/12/2023 6:14:36 AM falls between 1/3/2023 3:01:43 PM and 1/12/2023 6:14:36 AM. IsRegressionStdDev: Marked as regression because -71.3583968559126 (T) = (0 -3287469.781517716) / Math.Sqrt((241489792.81366926 / (14)) + (69237864.01625378 / (23))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (14) + (23) - 2, .025) and -0.10828003724971354 = (2966280.7873683604 - 3287469.781517716) / 2966280.7873683604 is less than -0.05. IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small. IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so. ``` ### Docs [Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md) [Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

[dakersnar]

Dup of https://github.com/dotnet/runtime/issues/80447