[Perf] Linux/arm64: 1 Regression on 10/6/2022 2:13:23 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	8571fcbd8def5bddef45e9cf177bf859ec135abb
Compare	d462be072d71d98534da318d3418465f788ecea1
Diff	Diff

Regressions in System.Collections.IterateForEach<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
List - Duration of single invocation	686.29 ns	857.62 ns	1.25	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.IterateForEach<Int32>*'

Related Issues

Regressions

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Collections.IterateForEach<Int32>.List(Size: 512)

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 857.6159981300318 > 720.6645140673459.
IsChangePoint: Marked as a change because one of 9/29/2022 1:36:12 PM, 10/6/2022 9:08:45 AM, 10/13/2022 2:25:23 AM falls between 10/4/2022 9:16:29 AM and 10/13/2022 2:25:23 AM.
IsRegressionStdDev: Marked as regression because -503.77178485896724 (T) = (0 -857.4869436409239) / Math.Sqrt((0.26115023543876575 / (25)) + (0.6286565592602918 / (6))) is less than -2.0452296421282288 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (6) - 2, .025) and -0.24909835418652734 = (686.4847277773898 - 857.4869436409239) / 686.4847277773898 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

[EgorBo]

dotnet/runtime#76695