[Perf] Alpine/x64: 1 Regression on 11/23/2022 5:21:28 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	alpine 3.15
Baseline	3d4f51254ab9993276c743c8f0fbe6879179daa6
Compare	0fffb89ff019bff325cea3ca90a91eec174d5968
Diff	Diff

Regressions in System.Tests.Perf_Uri

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Ctor - Duration of single invocation	86.55 ns	97.15 ns	1.12	0.01	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Uri.Ctor

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 97.15384517829705 > 90.45844552152947.
IsChangePoint: Marked as a change because one of 10/17/2022 3:19:47 PM, 11/23/2022 1:02:40 AM, 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 -29.887942676146828 (T) = (0 -98.46146640755288) / Math.Sqrt((0.8092167084044862 / (29)) + (3.2240181052570107 / (26))) is less than -2.005745995316835 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (29) + (26) - 2, .025) and -0.13418334815190014 = (86.81265385177038 - 98.46146640755288) / 86.81265385177038 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

[EgorBo]

dotnet/runtime#78666