[Perf] Windows/x64: 1 Regression on 1/23/2025 3:22:49 AM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	TigerWindows
Baseline	4bb0bcd9b5c47df97e51b462d8204d66c7d470fc
Compare	c74440f8291edd35843f3039754b887afe61766e
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_Char

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
GetUnicodeCategory - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.45 ns	2.54 ns	1.75	0.06	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_Char*'

System.Tests.Perf_Char.GetUnicodeCategory(c: 'א')

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

Due to #111569, FYI @MihaZupan

[MihaZupan]

Method	Toolchain	c	Mean	Error	Ratio
GetUnicodeCategory	\47581030\corerun.exe	א	0.4043 ns	0.0165 ns	1.01
GetUnicodeCategory	\7d758783\corerun.exe	א	0.3995 ns	0.0171 ns	1.00
GetUnicodeCategory	\c74440f8\corerun.exe	א	0.3999 ns	0.0197 ns	1.00
GetUnicodeCategory	\e2874f53\corerun.exe	א	0.3965 ns	0.0193 ns	0.99

I'm not seeing a change here (x64, Windows, coreclr).

I see previous spikes to similar levels for this benchmark, could this be bimodal?

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