[Perf] Changes at 3/24/2022 2:02:01 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	Windows 10.0.18362
Baseline	ea4ebaa3c5162bcabc63284ba3b59aa683912af4
Compare	7d1191e32208702899eec55aa622b6aff99986e1
Diff	Diff

Improvements in System.Tests.Perf_String

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Split - Duration of single invocation	28.11 ns	25.62 ns	0.91	0.07	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_String.Split(s: "ABCDEFGHIJKLMNOPQRSTUVWXYZ", arr: [' '], options: RemoveEmptyEntries)

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 25.621391936001302 < 26.701411064078084.
IsChangePoint: Marked as a change because one of 3/23/2022 10:40:09 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.
IsImprovementStdDev: Marked as improvement because 26.937109174957055 (T) = (0 -25.412631297336418) / Math.Sqrt((0.2871288106378486 / (299)) + (0.38723362664035127 / (32))) is greater than 1.9672006833568965 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (32) - 2, .975) and 0.10805246049606042 = (28.491172599085548 - 25.412631297336418) / 28.491172599085548 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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