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[Perf] Linux/arm64: 16 Regressions on 4/16/2025 10:55:00 PM +00:00 #114998

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performanceautofiler bot opened this issue Apr 24, 2025 · 5 comments
Open

[Perf] Linux/arm64: 16 Regressions on 4/16/2025 10:55:00 PM +00:00 #114998

performanceautofiler bot opened this issue Apr 24, 2025 · 5 comments
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@MihaZupan
Labels
area-System.Text.Encoding PGO runtime-coreclr specific to the CoreCLR runtime
Milestone
10.0.0

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@performanceautofiler
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Run Information

Name Value
Architecture arm64
OS ubuntu 22.04
Queue AmpereUbuntu
Baseline 8d0a87c2380f661b4415a558c948e6d8a2c710c4
Compare b281500fa1f42732455f8d4f06bcb376d88cdfdd
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Encodings.Web.Tests.Perf_Encoders

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
72.83 ns 79.32 ns 1.09 0.01 False
16.32 ns 19.60 ns 1.20 0.05 False
64.91 ns 70.76 ns 1.09 0.01 False
66.24 ns 74.76 ns 1.13 0.01 False
20.37 ns 22.12 ns 1.09 0.01 False
105.35 ns 117.50 ns 1.12 0.01 False
100.94 ns 116.89 ns 1.16 0.00 False
45.03 ns 54.18 ns 1.20 0.01 False
38.67 ns 46.13 ns 1.19 0.01 False
43.36 ns 53.20 ns 1.23 0.00 False
90.22 ns 103.79 ns 1.15 0.01 False
16.70 ns 19.65 ns 1.18 0.03 False
32.39 ns 41.98 ns 1.30 0.00 False
51.23 ns 58.22 ns 1.14 0.00 False

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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.Text.Encodings.Web.Tests.Perf_Encoders*'

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,no escaping required,512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: UnsafeRelaxed,no <escaping /> required,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: Url,&lorem ipsum=dolor sit amet,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: JavaScript,&Hello+<World>!,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: JavaScript,no escaping required,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: Url,�2020,512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,&Hello+<World>!,512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,&Hello+<World>!,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: UnsafeRelaxed,hello "there",16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: Url,�2020,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: UnsafeRelaxed,hello "there",512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,no escaping required,16)

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JIT Disasms

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: UnsafeRelaxed,hello "there",16)

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JIT Disasms

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: Url,�2020,16)

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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 8d0a87c2380f661b4415a558c948e6d8a2c710c4
Compare b281500fa1f42732455f8d4f06bcb376d88cdfdd
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Tests.Perf_Strings

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
85.45 ms 96.13 ms 1.13 0.15 False
85.50 ms 95.69 ms 1.12 0.15 False

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.Text.Json.Tests.Perf_Strings*'

System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: False, SkipValidation: False, Escaped: AllEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: False, Escaped: AllEscaped)

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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) PGO runtime-coreclr specific to the CoreCLR runtime untriaged New issue has not been triaged by the area owner labels Apr 24, 2025
@performanceautofiler performanceautofiler bot mentioned this issue Apr 24, 2025
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@AndyAyersMS
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Looks like it was #114494

@AndyAyersMS AndyAyersMS transferred this issue from dotnet/perf-autofiling-issues Apr 24, 2025
@ghost ghost added the needs-area-label An area label is needed to ensure this gets routed to the appropriate area owners label Apr 24, 2025
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Fyi @MihaZupan

@AndyAyersMS
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AndyAyersMS commented Apr 24, 2025 •
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@AndyAyersMS AndyAyersMS mentioned this issue Apr 24, 2025
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@dotnet-policy-service Dotnet Policy Service
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Tagging subscribers to this area: @dotnet/area-system-text-encoding
See info in area-owners.md if you want to be subscribed.

@tarekgh tarekgh added this to the 10.0.0 milestone Apr 25, 2025
@tarekgh tarekgh removed needs-area-label An area label is needed to ensure this gets routed to the appropriate area owners untriaged New issue has not been triaged by the area owner labels Apr 25, 2025
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tarekgh commented Apr 25, 2025

@MihaZupan could you please have a look?

@MihaZupan MihaZupan removed arch-arm64 os-linux Linux OS (any supported distro) labels Apr 25, 2025
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@jeffschwMSFT @AndyAyersMS @tarekgh @MihaZupan