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[Perf] Windows/arm64: 1 Regression on 3/21/2023 8:47:40 PM #14411

Description

@performanceautofiler

Run Information

Name Value
Architecture arm64
OS Windows 10.0.25094
Queue AmpereWindows
Baseline 7b651743dc951384f6c3d8455c88518022c7c3b9
Compare b0b7aaefb88aa8d01b3d64fb40ac2f73a9d98c3e
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.MathBenchmarks.MathTests

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
DivRemInt32 - Duration of single invocation 1.54 ns 4.31 ns 2.81 0.94 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.MathBenchmarks.MathTests*'
Details

Payloads

Baseline
Compare

Histogram

System.MathBenchmarks.MathTests.DivRemInt32


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 4.312380935248828 > 0.5939844176873135.
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 -6.032077249089664 (T) = (0 -4.388546128689507) / Math.Sqrt((0.7813999626166381 / (33)) + (1.1935832460748828 / (4))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (4) - 2, .025) and -3.546562935432189 = (0.9652447774314904 - 4.388546128689507) / 0.9652447774314904 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

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