[Perf] Windows/x64: 4 Regressions on 1/16/2025 6:34:00 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	e71d737628c7b807aa12755dabe4eca40c40da7e
Compare	db7e9abb70208a67e686fdb6a593618649a2ed7e
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.MathBenchmarks.Double

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ILogB - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	5.14 μs	5.42 μs	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.MathBenchmarks.Double*'

System.MathBenchmarks.Double.ILogB

ETL Files

Histogram

JIT Disasms

Docs

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

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	e71d737628c7b807aa12755dabe4eca40c40da7e
Compare	db7e9abb70208a67e686fdb6a593618649a2ed7e
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.MathBenchmarks.Single

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ILogB - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.07 μs	5.42 μs	1.33	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.MathBenchmarks.Single*'

System.MathBenchmarks.Single.ILogB

ETL Files

Histogram

JIT Disasms

Docs

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

---

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22631
Queue	ViperWindows
Baseline	e71d737628c7b807aa12755dabe4eca40c40da7e
Compare	db7e9abb70208a67e686fdb6a593618649a2ed7e
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Numerics.Tests.Perf_Matrix4x4

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
DecomposeBenchmark - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	28.83 ns	33.94 ns	1.18	0.01	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.Numerics.Tests.Perf_Matrix4x4*'

System.Numerics.Tests.Perf_Matrix4x4.DecomposeBenchmark

ETL Files

Histogram

JIT Disasms

Docs

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

[DrewScoggins]

This range of commits is implicated, 73a9330...7790117. We think it is #111179.

Related Regressions:

• [Perf] Windows/x64: 1 Regression on 1/16/2025 6:34:00 PM +00:00 perf-autofiling-issues#48474
• [Perf] Linux/x64: 3 Regressions on 1/16/2025 6:34:00 PM +00:00 perf-autofiling-issues#48503
• [Perf] Linux/arm64: 1 Regression on 1/16/2025 8:01:46 PM +00:00 perf-autofiling-issues#48718

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-system-numerics
See info in area-owners.md if you want to be subscribed.

[tannergooding]

There was no change to the disassembly for any of the linked regressions, it's likely due to some subtle code alignment or other change.