[Perf] Changes at 3/28/2022 10:41:36 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	4019e83878a81465f6e42e8502b53bc5d1752f81
Compare	019bc7f143ae5840fe7d0e8e720e4854b1a91c26
Diff	Diff

Improvements in System.Memory.Span<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
EndsWith - Duration of single invocation	24.88 ns	19.77 ns	0.79	0.26	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Memory.Span<Int32>*'

Details

Payloads

Baseline
Compare

Histogram

System.Memory.Span<Int32>.EndsWith(Size: 512)

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 19.770214490450893 < 23.234077035399604.
IsChangePoint: Marked as a change because one of 2/4/2022 8:14:56 PM, 2/22/2022 2:43:53 PM, 3/10/2022 1:12:51 AM, 3/28/2022 7:37:41 AM, 4/5/2022 12:43:03 AM falls between 3/26/2022 9:07:40 PM and 4/5/2022 12:43:03 AM.
IsImprovementStdDev: Marked as improvement because 8.006197719500115 (T) = (0 -20.68718891821998) / Math.Sqrt((4.741770078743461 / (299)) + (1.2240779562399444 / (36))) is greater than 1.9671134448822736 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (36) - 2, .975) and 0.07954410401787716 = (22.47493770046074 - 20.68718891821998) / 22.47493770046074 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

[EgorBo]

Most likely dotnet/runtime#67202