[Perf] Windows/x64: 8 Regressions on 3/11/2024 8:28:14 PM

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	OwlWindows
Baseline	5161ccd6662f656a1a7dd394264e61a9955536bf
Compare	27214a0787f9a0ee95c799639431d9d16c25d1ac
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Memory.Span<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
IndexOfAnyFiveValues - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	33.87 ns	52.74 ns	1.56	0.15	False
IndexOfAnyFourValues - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	27.82 ns	51.83 ns	1.86	0.17	False
IndexOfAnyTwoValues - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	9.35 ns	12.35 ns	1.32	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.Memory.Span<Int32>*'

Payloads

Baseline
Compare

System.Memory.Span<Int32>.IndexOfAnyFiveValues(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Int32>.IndexOfAnyFourValues(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Int32>.IndexOfAnyTwoValues(Size: 33)

ETL Files

Histogram

JIT Disasms

Docs

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

[DrewScoggins]

Could be related to #99509
Windows Amd Regressions: dotnet/perf-autofiling-issues#31383, dotnet/perf-autofiling-issues#31917
Windows Arm64 Regressions: dotnet/perf-autofiling-issues#31618, dotnet/perf-autofiling-issues#31611

[AndyAyersMS]

For System.Memory.Span<Int32>.IndexOfAnyFiveValues(Size: 33) -- looks like all platforms were impacted, and things haven't recovered since.

[AndyAyersMS]

Looking again, things seem to have improved...