[Perf] Windows/x86: 1 Regression on 12/12/2022 5:25:39 PM

[performanceautofiler]

Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	b5da2c68bb437dd285dbee385854c7361117a19f
Compare	fdd1f635234dc33f71e2e16d208fe5c08b4147e6
Diff	Diff

Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int16>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetHashCodeBenchmark - Duration of single invocation	27.32 ns	29.93 ns	1.10	0.04	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int16>*'

Payloads

Baseline
Compare

Histogram

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int16>.GetHashCodeBenchmark

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 29.93101654657759 > 28.317207701801248.
IsChangePoint: Marked as a change because one of 12/12/2022 1:34:22 PM, 12/20/2022 4:30:45 AM falls between 12/11/2022 2:11:02 PM and 12/20/2022 4:30:45 AM.
IsRegressionStdDev: Marked as regression because -14.083448294549374 (T) = (0 -29.489369834567434) / Math.Sqrt((0.25001309681762107 / (18)) + (0.45051264735984703 / (38))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (18) + (38) - 2, .025) and -0.08298802026874674 = (27.229636231109517 - 29.489369834567434) / 27.229636231109517 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

[kunalspathak]

dotnet/runtime#79973