[Perf] Linux/x64: 1 Regression on 11/3/2022 4:18:41 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	13d4e6de2c4ecd1414bd29d5240fb6fe2e33b9fa
Compare	64b3ee4d35f9ba6a0bf66a0c5b41d2c8873cd89f
Diff	Diff

Regressions in System.Tests.Perf_Environment

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetFolderPath - Duration of single invocation	4.44 μs	6.11 μs	1.37	0.00	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Tests.Perf_Environment*'

Related Issues

Regressions

Improvements

Details

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Tests.Perf_Environment.GetFolderPath(folder: System, option: None)

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 6.105682431681848 > 4.585033086174572.
IsChangePoint: Marked as a change because one of 11/2/2022 9:17:08 PM, 11/9/2022 12:33:05 PM falls between 10/31/2022 10:23:25 PM and 11/9/2022 12:33:05 PM.
IsRegressionStdDev: Marked as regression because -141.46982564848437 (T) = (0 -6108.792020889851) / Math.Sqrt((2173.443495250577 / (22)) + (1219.8972631923637 / (26))) is less than -2.0128955989180297 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (26) - 2, .025) and -0.38801723256666676 = (4401.092347818848 - 6108.792020889851) / 4401.092347818848 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

[kotlarmilos]

Looks like regression in 92971c9

[kotlarmilos]

@elinor-fung do you have any idea what could cause a regression?

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.