[Perf] Windows/x64: 1 System.Collections.Tests.Perf_BitArray Regression on 3/18/2025 4:15:54 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	TigerWindows
Baseline	9d742b6666e896f261cf3b62c5dfbeb7a94e8097
Compare	b71e09a5355f952448ecfb0dbe4d1f2bdd307740
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.Tests.Perf_BitArray

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
BitArrayLeftShift - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	171.90 ns	211.26 ns	1.23	0.00	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.Tests.Perf_BitArray*'

System.Collections.Tests.Perf_BitArray.BitArrayLeftShift(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

In range: 295338c...a45130e, most likely caused by: #111778.