[Perf] Linux/x64: 3 Regressions on 10/10/2025 11:27:19 AM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	634641c806b129bd6892e071aece3f4916ea519d
Compare	ce130b81fb3abd946f13a4757fe254fbf3efd9d6
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.IO.Compression.Brotli

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Compress - Duration of single invocation ADX - Test Multi Config Graph	816.20 μs	1.52 ms	1.86	0.24	False
Compress - Duration of single invocation ADX - Test Multi Config Graph	146.31 μs	178.50 μs	1.22	0.06	False
Compress - Duration of single invocation ADX - Test Multi Config Graph	324.13 μs	483.46 μs	1.49	0.12	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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Compression.Brotli*'

System.IO.Compression.Brotli.Compress(level: Fastest, file: "alice29.txt")

ETL Files

Histogram

JIT Disasms

System.IO.Compression.Brotli.Compress(level: Fastest, file: "sum")

ETL Files

Histogram

JIT Disasms

System.IO.Compression.Brotli.Compress(level: Fastest, file: "TestDocument.pdf")

ETL Files

Histogram

JIT Disasms

Docs

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

[LoopedBard3]

Likely due to #120433 as that is the only commit in the range.

Related Regressions:

• [Perf] Linux/x64: 1 Regression on 10/10/2025 11:27:19 AM +00:00 perf-autofiling-issues#63718
• [Perf] Windows/x64: 3 Regressions on 10/10/2025 11:27:19 AM +00:00 perf-autofiling-issues#63733
• [Perf] Windows/x64: 5 Regressions on 10/10/2025 11:27:19 AM +00:00 perf-autofiling-issues#63749

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-system-io-compression
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[stephentoub]

cc: @rzikm