[Perf] Windows/x64: 2 Regressions on 3/16/2025 11:54:41 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	7b0fbc8e971aac12b77bbf6ed8f7e198b089a6ee
Compare	c392a6c8676b91795774b1584c140fe9c2ed4a99
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.IterateForEach<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ImmutableSortedSet - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.06 μs	3.93 μs	1.28	0.40	False
ConcurrentBag - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	846.06 ns	891.80 ns	1.05	0.00	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.Collections.IterateForEach<Int32>*'

System.Collections.IterateForEach<Int32>.ImmutableSortedSet(Size: 512)

ETL Files

Histogram

JIT Disasms

System.Collections.IterateForEach<Int32>.ConcurrentBag(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

Concurrent bag test is mis-dated and likely related to #113913. The ImmutableSortedSet test only has one commit in range: 5c4a80e...544cf0c, #113586. FYI @AndyAyersMS, though it seems there was no diff from the PR so it may be unrelated.

Potentially related:

• [Perf] Linux/x64: 3 Regressions on 3/16/2025 10:54:17 PM +00:00 perf-autofiling-issues#52301 (Subtract test only)

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