[Perf] Windows/arm64: 1 Regression on 10/14/2022 6:08:00 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.25094
Baseline	f58cee20c39591835a01c2ffd5f2b3900b279c38
Compare	65d20644b7852307fe076225a4f78395287bdb93
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
ReadLineAsync - Duration of single invocation	50.18 μs	59.94 μs	1.19	0.63	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/arm64: 6 Regressions on 10/14/2022 6:08:00 AM
• [Perf] Linux/arm64: 5 Regressions on 10/14/2022 6:08:00 AM

Improvements

• [Perf] Windows/arm64: 2 Improvements on 10/14/2022 6:08:00 AM
• [Perf] Linux/arm64: 2 Improvements on 10/14/2022 6:08:00 AM
• [Perf] Windows/x64: 1 Improvement on 10/14/2022 6:08:00 AM

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.IO.Tests.StreamReaderReadLineTests.ReadLineAsync(LineLengthRange: [1025, 2048])

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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 8/17/2022 3:53:31 PM, 10/13/2022 10:51:15 PM, 10/19/2022 4:51:05 PM falls between 10/10/2022 11:56:05 PM and 10/19/2022 4:51:05 PM.
IsRegressionStdDev: Marked as regression because -5.576284706364548 (T) = (0 -57012.39727016988) / Math.Sqrt((15018391.325165663 / (15)) + (25206420.189434584 / (18))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (18) - 2, .025) and -0.17865303308534403 = (48370.806055560985 - 57012.39727016988) / 48370.806055560985 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