[Perf] Changes at 6/20/2022 1:54:42 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.19041
Baseline	566de97e5860bb1d9e4583945f0173070396098d
Compare	38794de5f2e3198b28df0915e82e33ab3d91f2ee
Diff	Diff

Regressions in System.Buffers.Text.Tests.Base64Tests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Base64Decode - Duration of single invocation	6.01 ns	314.33 ns	52.28	0.16	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Text.Tests.Base64Tests*'

Payloads

Baseline
Compare

Histogram

System.Buffers.Text.Tests.Base64Tests.Base64Decode(NumberOfBytes: 1000)

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 314.33364531869654 > 6.314291724899773.
IsChangePoint: Marked as a change because one of 6/19/2022 8:44:36 PM, 6/23/2022 3:07:42 AM falls between 6/14/2022 10:05:19 AM and 6/23/2022 3:07:42 AM.
IsRegressionStdDev: Marked as regression because -18.662625287754853 (T) = (0 -332.7845503824748) / Math.Sqrt((0.07451498597383752 / (33)) + (3681.50795705706 / (12))) is less than -2.016692199226234 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (12) - 2, .025) and -55.41991189941753 = (5.898352889592343 - 332.7845503824748) / 5.898352889592343 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

[kunalspathak]

From dotnet/runtime#70654