[Perf] Windows/arm64: 1 Regression on 4/28/2025 6:05:17 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	Windows 10.0.22621
Queue	SurfaceWindows
Baseline	5d42918cebad7a7863b7231375bb5bf494ffb3a0
Compare	72a5ef7a9e5721d050623bacde82f8a384513966
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.Concurrent.Count<String>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Dictionary - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	140.37 ns	180.03 ns	1.28	0.08	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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Concurrent.Count<String>*'

System.Collections.Concurrent.Count<String>.Dictionary(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

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

[AndyAyersMS]

Not clear, maybe dotnet/runtime#115080 ?

[AndyAyersMS]

Just surface only for now, marking as look again.