[Perf] Linux/arm64: 4 Regressions on 5/2/2024 12:36:08 PM

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	017593d90781d797df8b2241f6d1f83c236c442b
Compare	e965312582a33c0acf2020648b54a152a80c139a
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_Random

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
NextSingle_unseeded - Duration of single invocation ADX - Test Multi Config Graph	2.19 ns	4.59 ns	2.09	0.43	False
NextDouble_unseeded - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	2.09 ns	4.59 ns	2.20	0.45	False
NextSingle - Duration of single invocation ADX - Test Multi Config Graph	8.69 ns	10.22 ns	1.18	0.06	False
NextDouble - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.13 ns	5.75 ns	1.84	0.31	False

Test Report

Repro

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

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Random*'

Details

System.Tests.Perf_Random.NextSingle_unseeded

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Random.NextDouble_unseeded

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Random.NextSingle

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Random.NextDouble

ETL Files

Histogram

JIT Disasms

Docs

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

[DrewScoggins]

This is a known issue with volatiles.