[Perf] Windows/x64: 2 Regressions on 3/21/2025 1:02:12 AM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	d34ef7e2d3f41f85d35d23ec484f7af566fd0d2f
Compare	1f067293272ab6d42e329782798bc2f7398d1907
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in PerfLabTests.StackWalk

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Walk - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	20.09 ms	21.77 ms	1.08	0.02	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 'PerfLabTests.StackWalk*'

PerfLabTests.StackWalk.Walk

ETL Files

Histogram

JIT Disasms

Docs

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

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	d34ef7e2d3f41f85d35d23ec484f7af566fd0d2f
Compare	1f067293272ab6d42e329782798bc2f7398d1907
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_GC<Char>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
AllocateUninitializedArray - Duration of single invocation ADX - Test Multi Config Graph	111.36 ns	117.01 ns	1.05	0.03	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.Tests.Perf_GC<Char>*'

System.Tests.Perf_GC<Char>.AllocateUninitializedArray(length: 10000, pinned: False)

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

From commit range: dc88476...f6fc3fb, seems to possibly be #113223. @kg could this PR be the cause for these regressions?

Related Regressions:

• [Perf] Windows/x64: 2 Regressions on 3/21/2025 1:02:12 AM +00:00 perf-autofiling-issues#52326

[dotnet-policy-service]

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