[Perf] Linux/arm64: 1 Regression on 11/7/2022 8:57:30 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	bfa4812aec806f09f1e2927939ba98118e5e5bf7
Compare	2aebbf75167b3aa21cae23e6fd702688dd724663
Diff	Diff

Regressions in System.IO.Tests.StreamReaderReadLineTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ReadLine - Duration of single invocation	350.58 μs	400.96 μs	1.14	0.10	False

Test Report

Repro

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

Related Issues

Regressions

• [Perf] Windows/x86: 22 Regressions on 11/7/2022 8:57:30 PM
• [Perf] Windows/x64: 29 Regressions on 11/7/2022 8:57:30 PM
• [Perf] Alpine/x64: 22 Regressions on 11/7/2022 8:57:30 PM
• [Perf] Linux/x64: 22 Regressions on 11/7/2022 8:57:30 PM

Improvements

• [Perf] Windows/x86: 21 Improvements on 11/7/2022 8:57:30 PM
• [Perf] Alpine/x64: 16 Improvements on 11/7/2022 8:57:30 PM
• [Perf] Windows/x64: 15 Improvements on 11/7/2022 8:57:30 PM
• [Perf] Linux/x64: 10 Improvements on 11/7/2022 8:57:30 PM

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.IO.Tests.StreamReaderReadLineTests.ReadLine(LineLengthRange: [ 0, 0])

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 400.9622829059829 > 369.01432725694445.
IsChangePoint: Marked as a change because one of 10/25/2022 1:30:53 PM, 11/7/2022 4:10:19 PM, 11/14/2022 5:26:26 PM falls between 11/5/2022 10:22:58 PM and 11/14/2022 5:26:26 PM.
IsRegressionStdDev: Marked as regression because -22.439086511207453 (T) = (0 -403707.6980289425) / Math.Sqrt((14687339.685374556 / (16)) + (95733795.13622826 / (22))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (16) + (22) - 2, .025) and -0.14625235821193772 = (352197.92145832034 - 403707.6980289425) / 352197.92145832034 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