Regressions in System.Numerics.Tests.Perf_Matrix4x4

[performanceautofiler]

Run Information

Architecture	x64
OS	alpine 3.15
Baseline	3d3c23d79818373db6ae8752f33f68c56c1733c4
Compare	0c46b34ed70ad23d8323d32d1c8eeb9f4819ae68
Diff	Diff

Regressions in System.Numerics.Tests.Perf_Matrix4x4

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
CreateScaleFromVectorWithCenterBenchmark - Duration of single invocation	8.07 ns	11.63 ns	1.44	0.21	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_Matrix4x4*'

Details

Payloads

Baseline
Compare

Histogram

System.Numerics.Tests.Perf_Matrix4x4.CreateScaleFromVectorWithCenterBenchmark

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 11.625000995348191 > 8.47419765122744.
IsChangePoint: Marked as a change because one of 11/25/2022 2:35:48 PM, 11/29/2022 1:43:29 AM falls between 11/20/2022 12:28:28 PM and 11/29/2022 1:43:29 AM.
IsRegressionStdDev: Marked as regression because -18.712345452882488 (T) = (0 -11.703298526863215) / Math.Sqrt((1.4615136939757034 / (44)) + (0.015439009616766749 / (11))) is less than -2.005745995316835 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (44) + (11) - 2, .025) and -0.4234806616886659 = (8.221606967937076 - 11.703298526863215) / 8.221606967937076 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