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[Perf] Windows/arm64: 1 Regression on 11/11/2022 1:18:55 PM #9857

@performanceautofiler

Description

@performanceautofiler

Run Information

Architecture arm64
OS Windows 10.0.25094
Baseline 4820105ba85531da5b388e7b2e98fdcdae9ced07
Compare 2b1f57e08b26879e4fa99670df078b77c848d9e0
Diff Diff

Regressions in System.Globalization.Tests.StringSearch

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
IsPrefix_DifferentFirstChar - Duration of single invocation 10.88 ns 12.35 ns 1.14 0.82 False

graph
Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Globalization.Tests.StringSearch*'

Related Issues

Regressions

Improvements

Details

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Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options: (en-US, OrdinalIgnoreCase, False))


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.
IsRegressionWindowed: Marked as regression because 12.34710303598727 > 10.274784014105428.
IsChangePoint: Marked as a change because one of 8/17/2022 2:33:27 AM, 11/11/2022 8:39:50 AM, 11/17/2022 1:45:21 AM falls between 11/8/2022 10:18:07 AM and 11/17/2022 1:45:21 AM.
IsRegressionStdDev: Marked as regression because -4.944691691318897 (T) = (0 -13.08533105440528) / Math.Sqrt((3.3275680001238443 / (19)) + (1.7560106255403836 / (17))) is less than -2.0322445093148245 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (17) - 2, .025) and -0.24905409505965245 = (10.476192429264122 - 13.08533105440528) / 10.476192429264122 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.
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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