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[Perf] Linux/arm64: 6 Regressions on 3/24/2025 4:04:18 PM +00:00 #113974

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performanceautofiler bot opened this issue Mar 27, 2025 · 6 comments
Open

[Perf] Linux/arm64: 6 Regressions on 3/24/2025 4:04:18 PM +00:00 #113974

performanceautofiler bot opened this issue Mar 27, 2025 · 6 comments
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arch-arm64 area-VM-coreclr os-linux Linux OS (any supported distro) runtime-coreclr specific to the CoreCLR runtime tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark untriaged New issue has not been triaged by the area owner

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Run Information

Name Value
Architecture arm64
OS ubuntu 22.04
Queue AmpereUbuntu
Baseline 28c417f605ba0f04af980847695ec9de470743a0
Compare 659321ff5db13026f52aec70cf2a6692bd4be454
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.IO.Tests.Perf_StreamWriter

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
452.13 ms 686.19 ms 1.52 0.01 False
62.58 ns 76.44 ns 1.22 0.00 False
454.68 ms 655.52 ms 1.44 0.03 False
454.41 ms 640.67 ms 1.41 0.01 False

graph
graph
graph
graph
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.Tests.Perf_StreamWriter*'

System.IO.Tests.Perf_StreamWriter.WriteString(writeLength: 100)

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System.IO.Tests.Perf_StreamWriter.WriteFormat

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System.IO.Tests.Perf_StreamWriter.WritePartialCharArray(writeLength: 100)

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System.IO.Tests.Perf_StreamWriter.WriteCharArray(writeLength: 100)

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JIT Disasms

Docs

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

Run Information

Name Value
Architecture arm64
OS ubuntu 22.04
Queue AmpereUbuntu
Baseline 28c417f605ba0f04af980847695ec9de470743a0
Compare fa4c14e0d82447c25aa0fa4d9735c905e30836ac
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in MicroBenchmarks.Serializers.Json_ToStream<Location>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.20 μs 1.33 μs 1.11 0.03 False

graph
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 'MicroBenchmarks.Serializers.Json_ToStream&lt;Location&gt;*'

MicroBenchmarks.Serializers.Json_ToStream<Location>.JsonNet_

ETL Files

Histogram

JIT Disasms

Docs

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

Run Information

Name Value
Architecture arm64
OS ubuntu 22.04
Queue AmpereUbuntu
Baseline db03493769728d6b7e02981b432d5136144c4fd0
Compare 659321ff5db13026f52aec70cf2a6692bd4be454
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in MicroBenchmarks.Serializers.Json_ToStream<IndexViewModel>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
36.07 μs 40.11 μs 1.11 0.10 False

graph
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 'MicroBenchmarks.Serializers.Json_ToStream&lt;IndexViewModel&gt;*'

MicroBenchmarks.Serializers.Json_ToStream<IndexViewModel>.JsonNet_

ETL Files

Histogram

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository
@performanceautofiler performanceautofiler bot added arch-arm64 os-linux Linux OS (any supported distro) runtime-coreclr specific to the CoreCLR runtime untriaged New issue has not been triaged by the area owner labels Mar 27, 2025
@performanceautofiler performanceautofiler bot mentioned this issue Mar 27, 2025
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@LoopedBard3 LoopedBard3 transferred this issue from dotnet/perf-autofiling-issues Mar 27, 2025
@dotnet-issue-labeler dotnet-issue-labeler bot added the needs-area-label An area label is needed to ensure this gets routed to the appropriate area owners label Mar 27, 2025
@LoopedBard3 LoopedBard3 added tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark labels Mar 27, 2025
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LoopedBard3 commented Mar 27, 2025 •
edited by AndyAyersMS
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Commit range: 5bce78d...6b176b2, most likely suspect is #113715.

Related Regressions:

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Tagging subscribers to this area: @mangod9
See info in area-owners.md if you want to be subscribed.

@vcsjones vcsjones removed the needs-area-label An area label is needed to ensure this gets routed to the appropriate area owners label Mar 31, 2025
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mangod9 commented Apr 1, 2025

@AaronRobinsonMSFT, are these regressions expected related to your change?

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I just added a few more related regressions from during our x64 triaging.

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@mangod9 It is possible, but my guess is this has something to do with PGO or another systemic issue. Notice that mono is also impacted and the only change in that PR to mono was some name changes to functions.

See #114696

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AndyAyersMS commented May 1, 2025 •
edited
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Looks like a lot of these were fixed via #115164.

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arch-arm64 area-VM-coreclr os-linux Linux OS (any supported distro) runtime-coreclr specific to the CoreCLR runtime tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark untriaged New issue has not been triaged by the area owner
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