[Perf] System.Numerics.Tests.Perf_BigInteger Regression on 9/16/2025 8:01:50 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	8e80e90cd4da9472baff910d90bfec2b6765ee0b
Compare	0c5f13b516c5a212c5d83b2157fd5a8712d16224
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Numerics.Tests.Perf_BigInteger

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ToStringD - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	55.93 ns	61.96 ns	1.11	0.04	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.Numerics.Tests.Perf_BigInteger*'

System.Numerics.Tests.Perf_BigInteger.ToStringD(numberString: -2147483648)

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

Seeing this on Linux and Windows arm64, Windows x86, and an improvement on intel Windows x64. Most likely #112178 from range: 54a230f...579bd79. FYI @tannergooding

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