[Perf] Linux/arm64: 1 Improvement on 6/8/2023 5:31:08 AM

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 20.04
Queue	AmpereUbuntu
Baseline	6e34b5d4e9b16321f37c108fea3aa7e4e04b495a
Compare	03b750593d7db0ae7c970ff066c41ce8049ad49b
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Random

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Next_long_unseeded - Duration of single invocation	12.06 ns	2.46 ns	0.20	0.14	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 'System.Tests.Perf_Random*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Random.Next_long_unseeded

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 2.4622042239129724 < 4.729649786710156.
IsChangePoint: Marked as a change because one of 2/18/2023 1:15:50 AM, 5/3/2023 7:05:50 AM, 5/19/2023 4:22:12 AM, 6/7/2023 7:43:49 PM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:09:45 PM and 6/14/2023 3:35:53 PM.
IsImprovementStdDev: Marked as improvement because 39.68169062191489 (T) = (0 -2.3743155319379405) / Math.Sqrt((2.5111114521711824 / (299)) + (0.010585273563610732 / (14))) is greater than 1.9676211333067681 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (14) - 2, .975) and 0.6152472935748715 = (6.171017103423479 - 2.3743155319379405) / 6.171017103423479 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

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

[AndyAyersMS]

Likely dotnet/runtime#87219