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Regressions in System.Net.Tests.Perf_WebUtility on arm64 #84787

@performanceautofiler

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@performanceautofiler

Run Information

Name Value
Architecture arm64
OS ubuntu 20.04
Queue AmpereUbuntu
Baseline 7b651743dc951384f6c3d8455c88518022c7c3b9
Compare b0b7aaefb88aa8d01b3d64fb40ac2f73a9d98c3e
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Net.Tests.Perf_WebUtility

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
Decode_NoDecodingRequired - Duration of single invocation 80.17 ns 87.66 ns 1.09 0.09 False

graph
Test Report

Repro

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

Payloads

Baseline
Compare

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

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Baseline
Compare

Histogram

System.Net.Tests.Perf_WebUtility.Decode_NoDecodingRequired


Description of detection logic

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 87.65567056152061 > 84.72435361342947.
IsChangePoint: Marked as a change because one of 3/21/2023 2:53:21 PM, 3/23/2023 3:52:33 AM falls between 3/14/2023 3:18:57 PM and 3/23/2023 3:52:33 AM.
IsRegressionStdDev: Marked as regression because -17.95135109670125 (T) = (0 -88.01258049891231) / Math.Sqrt((2.5000512794458047 / (33)) + (0.2977841763370414 / (4))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (4) - 2, .025) and -0.08583376758709343 = (81.05529881842888 - 88.01258049891231) / 81.05529881842888 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
Benchmarking workflow for dotnet/runtime repository

Run Information

Name Value
Architecture arm64
OS ubuntu 20.04
Queue AmpereUbuntu
Baseline 7b651743dc951384f6c3d8455c88518022c7c3b9
Compare b0b7aaefb88aa8d01b3d64fb40ac2f73a9d98c3e
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

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arch-arm64area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIos-linuxLinux OS (any supported distro)runtime-coreclrspecific to the CoreCLR runtime

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