[Perf] Linux/arm64: 1 Improvement on 3/29/2023 6:23:42 PM

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 20.04
Queue	AmpereUbuntu
Baseline	9111203d54e91560d1f61720c71c34be76069d06
Compare	2d90e251f9f6c4509de6641a6bc39ac7a35cc032
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Improvements in Microsoft.Extensions.Primitives.StringSegmentBenchmark

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
EndsWith - Duration of single invocation	1.51 ns	0.39 ns	0.26	0.51	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.Extensions.Primitives.StringSegmentBenchmark*'

Payloads

Baseline
Compare

Histogram

Microsoft.Extensions.Primitives.StringSegmentBenchmark.EndsWith

Description of detection logic

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.
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 0.3943005953265774 < 1.520598463616692.
IsChangePoint: Marked as a change because one of 1/26/2023 1:49:07 PM, 3/29/2023 12:02:44 PM, 4/5/2023 11:58:06 PM falls between 3/28/2023 10:24:48 AM and 4/5/2023 11:58:06 PM.
IsImprovementStdDev: Marked as improvement because 32.98874792695387 (T) = (0 -0.35531261083714794) / Math.Sqrt((0.10384418957306413 / (299)) + (0.017740446762435056 / (21))) is greater than 1.967451947860886 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (21) - 2, .975) and 0.7622218281268901 = (1.4943028960066203 - 0.35531261083714794) / 1.4943028960066203 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

[AndyAyersMS]

dotnet/runtime#83945