[Perf] Windows/x64: 2 Regressions on 5/19/2025 12:29:04 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	29638e8e84335bc877f064766be3f1b3038da311
Compare	3c391c2f144775076946ec446340af0225e6d43f
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Object>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
MultipleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	192.71 ns	221.51 ns	1.15	0.11	False
SingleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	23.23 ns	25.77 ns	1.11	0.22	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.Buffers.Tests.RentReturnArrayPoolTests<Object>*'

System.Buffers.Tests.RentReturnArrayPoolTests<Object>.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

ETL Files

Histogram

JIT Disasms

System.Buffers.Tests.RentReturnArrayPoolTests<Object>.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

ETL Files

Histogram

JIT Disasms

Docs

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

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[LoopedBard3]

Likely due to commit #115375 in range: 2e77d32...97424fe. This is also being seen across pretty much all platforms based on the ADX graphs.