[Perf] Windows/x64: 4 Regressions on 6/20/2025 12:23:58 AM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	TigerWindows
Baseline	ad4e636ec6630213a8531f2fbd1bef6da4e17d6a
Compare	0bd4424eef3729bfa4132d903e6dd078e8069504
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_DateTimeOffset

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ToString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	42.69 ns	46.11 ns	1.08	0.02	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_DateTimeOffset*'

System.Tests.Perf_DateTimeOffset.ToString(format: "o")

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 10.0.22621
Queue	TigerWindows
Baseline	ad4e636ec6630213a8531f2fbd1bef6da4e17d6a
Compare	0bd4424eef3729bfa4132d903e6dd078e8069504
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_Int64

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ToString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	28.80 ns	34.71 ns	1.21	0.02	False
TryFormat - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	17.23 ns	19.20 ns	1.11	0.05	False
TryFormat - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	5.93 ns	7.20 ns	1.21	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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int64*'

System.Tests.Perf_Int64.ToString(value: -9223372036854775808)

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Int64.TryFormat(value: 9223372036854775807)

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Int64.TryFormat(value: 12345)

ETL Files

Histogram

JIT Disasms

Docs

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

[DrewScoggins]

There are two regressions here. The second is maybe related to #116875. The first we are unsure, but the commit range is 81cff29...ede0118

Regressions:

• [Perf] Linux/x64: 1 Regression on 6/20/2025 12:23:58 AM +00:00 perf-autofiling-issues#58136
• [Perf] Linux/x64: 4 Regressions on 6/21/2025 12:23:21 AM +00:00 perf-autofiling-issues#58137 (maybe related to JIT: avoid creating unnecessary temp for indirect virtual stub calls #116875)
• [Perf] Windows/x64: 1 Regression on 6/22/2025 9:43:31 PM +00:00 perf-autofiling-issues#58563 (maybe related, date does not match actual regression time)

[dotnet-policy-service]

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.