[Perf] Linux/arm64: 3 Improvements on 10/15/2023 3:35:00 PM

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 20.04
Queue	AmpereUbuntu
Baseline	5233eea73e60915d849b945dccec150bc57827c6
Compare	a30d6c9dc413d9c60bed2d4daecba4552abd7fe9
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Improvements in System.Globalization.Tests.StringSearch

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
[IsPrefix_FirstHalf - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options%3a%20(en-US%2c%20OrdinalIgnoreCase%2c%20False)).html>) 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	49.71 ns	32.09 ns	0.65	0.02	True
[IsSuffix_SecondHalf - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IsSuffix_SecondHalf(Options%3a%20(en-US%2c%20OrdinalIgnoreCase%2c%20False)).html>) 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	50.61 ns	31.88 ns	0.63	0.01	True
[IsSuffix_DifferentLastChar - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options%3a%20(en-US%2c%20OrdinalIgnoreCase%2c%20False)).html>) 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	95.40 ns	59.81 ns	0.63	0.03	True

graph graph graph Test Report

Repro

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

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringSearch*'

### Payloads [Baseline]() [Compare]() ### System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options: (en-US, OrdinalIgnoreCase, False)) #### ETL Files #### Histogram #### Description of detection logic ``` IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsImprovementWindowed: Marked as improvement because we could not find enough baseline builds for window checking. IsChangePoint: Marked as a change because one of 10/14/2023 8:59:45 PM, 10/18/2023 4:42:02 PM falls between 10/9/2023 8:09:24 PM and 10/18/2023 4:42:02 PM. IsImprovementStdDev: Marked as improvement because 78.77960322835312 (T) = (0 -31.421571400007213) / Math.Sqrt((1.0254528854780536 / (299)) + (0.2049784833357439 / (4))) is greater than 1.9678765312856872 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (4) - 2, .975) and 0.3695793264888517 = (49.842228721662565 - 31.421571400007213) / 49.842228721662565 is greater than 0.05. IsChangeEdgeDetector: Marked as regression because Edge Detector said so. ``` #### JIT Disasms ### System.Globalization.Tests.StringSearch.IsSuffix_SecondHalf(Options: (en-US, OrdinalIgnoreCase, False)) #### ETL Files #### Histogram #### Description of detection logic ``` IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsImprovementWindowed: Marked as improvement because we could not find enough baseline builds for window checking. IsChangePoint: Marked as a change because one of 10/14/2023 8:59:45 PM, 10/18/2023 4:42:02 PM falls between 10/9/2023 8:09:24 PM and 10/18/2023 4:42:02 PM. IsImprovementStdDev: Marked as improvement because 42.05796688700566 (T) = (0 -33.11821413633196) / Math.Sqrt((0.7457132521485321 / (299)) + (0.6781980074790847 / (4))) is greater than 1.9678765312856872 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (4) - 2, .975) and 0.34501183092540966 = (50.56307228132611 - 33.11821413633196) / 50.56307228132611 is greater than 0.05. IsChangeEdgeDetector: Marked as regression because Edge Detector said so. ``` #### JIT Disasms ### System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (en-US, OrdinalIgnoreCase, False)) #### ETL Files #### Histogram #### Description of detection logic ``` IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsImprovementWindowed: Marked as improvement because we could not find enough baseline builds for window checking. IsChangePoint: Marked as a change because one of 10/14/2023 8:59:45 PM, 10/18/2023 4:42:02 PM falls between 10/9/2023 8:09:24 PM and 10/18/2023 4:42:02 PM. IsImprovementStdDev: Marked as improvement because 48.741380378753675 (T) = (0 -61.254688754206015) / Math.Sqrt((1.0576862733546295 / (299)) + (1.9529729820230637 / (4))) is greater than 1.9678765312856872 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (4) - 2, .975) and 0.35815677460903783 = (95.43559288468661 - 61.254688754206015) / 95.43559288468661 is greater than 0.05. IsChangeEdgeDetector: Marked as regression because Edge Detector said so. ``` #### 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)

dotnet / perf-autofiling-issues