[Perf] Alpine/x64: 1 Regression on 10/6/2022 2:13:23 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	alpine 3.15
Baseline	01cc57335aa6dacd28c928940642d0dc05c2bf32
Compare	d462be072d71d98534da318d3418465f788ecea1
Diff	Diff

Regressions in Microsoft.Extensions.Primitives.Performance.StringValuesBenchmark

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ForEach_Array - Duration of single invocation	3.16 ns	5.13 ns	1.62	0.03	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'Microsoft.Extensions.Primitives.Performance.StringValuesBenchmark*'

Related Issues

Regressions

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

Microsoft.Extensions.Primitives.Performance.StringValuesBenchmark.ForEach_Array

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 5.126694126831472 > 3.314666534304889.
IsChangePoint: Marked as a change because one of 9/29/2022 5:24:34 PM, 10/6/2022 11:18:47 AM, 10/11/2022 2:16:14 AM falls between 10/2/2022 5:38:34 AM and 10/11/2022 2:16:14 AM.
IsRegressionStdDev: Marked as regression because -24.8125807792211 (T) = (0 -5.118998885697307) / Math.Sqrt((0.2438424250554951 / (45)) + (0.0002486379500906737 / (11))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (45) + (11) - 2, .025) and -0.5565461804669468 = (3.2886906600880055 - 5.118998885697307) / 3.2886906600880055 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

[DrewScoggins]

Related to revert here dotnet/runtime#76695