[Perf] Changes at 4/16/2022 8:46:33 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.19041
Baseline	2d4f2d0c8f60d5f49e39f3ddbe1824648ee2b306
Compare	a39ddca87f9d8e99d74ef44f280761bde578aca2
Diff	Diff

Regressions in System.Tests.Perf_String

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TrimEnd - Duration of single invocation	13.78 ns	15.77 ns	1.14	0.17	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_String.TrimEnd(s: "Test ")

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 15.765435302648601 > 14.616556880016617.
IsChangePoint: Marked as a change because one of 2/23/2022 1:54:47 PM, 2/26/2022 10:27:55 AM, 4/16/2022 2:55:52 PM, 4/20/2022 10:05:23 PM falls between 4/12/2022 9:30:02 AM and 4/20/2022 10:05:23 PM.
IsRegressionStdDev: Marked as regression because -13.288274646308315 (T) = (0 -16.542613122958947) / Math.Sqrt((0.30559218329145393 / (26)) + (0.3500244291239915 / (15))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (26) + (15) - 2, .025) and -0.1771200313369502 = (14.05346326845714 - 16.542613122958947) / 14.05346326845714 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

[dakersnar]

Could be dotnet/runtime#68055 or the PGO update dotnet/runtime#68109