[Perf] Changes at 3/29/2022 12:39:07 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	019bc7f143ae5840fe7d0e8e720e4854b1a91c26
Compare	14e6a418d15ed3fe4d784b55bddbf582733b2b1d
Diff	Diff

Regressions in System.Buffers.Text.Tests.Base64EncodeDecodeInPlaceTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Base64DecodeInPlace - Duration of single invocation	135.25 ms	149.84 ms	1.11	0.01	True

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Text.Tests.Base64EncodeDecodeInPlaceTests*'

Details

Payloads

Baseline
Compare

Histogram

System.Buffers.Text.Tests.Base64EncodeDecodeInPlaceTests.Base64DecodeInPlace(NumberOfBytes: 200000000)

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 149.8438253846154 > 142.342387045.
IsChangePoint: Marked as a change because one of 3/28/2022 9:07:19 PM, 3/31/2022 1:45:25 PM falls between 3/22/2022 11:55:12 PM and 3/31/2022 1:45:25 PM.
IsRegressionStdDev: Marked as regression because -10.27633589328017 (T) = (0 -159725539.02860475) / Math.Sqrt((5365423775.444562 / (42)) + (60857601959573.86 / (11))) is less than -2.007583770314729 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (42) + (11) - 2, .025) and -0.17831671568555896 = (135553995.71470433 - 159725539.02860475) / 135553995.71470433 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 as regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[AndyAyersMS]

Looks like OSR: dotnet/runtime#65675