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[Perf] Linux/arm64: 22 Improvements on 8/12/2025 11:42:40 PM +00:00 #61010

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture arm64
OS ubuntu 22.04
Queue AmpereUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

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

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
162.52 ns 149.14 ns 0.92 0.01 False
153.47 ns 137.23 ns 0.89 0.01 False
122.33 ns 82.48 ns 0.67 0.01 False
116.61 ns 81.91 ns 0.70 0.01 False
167.16 ns 126.42 ns 0.76 0.01 False
215.82 ns 176.17 ns 0.82 0.01 False
55.98 ns 40.87 ns 0.73 0.01 False
118.67 ns 76.92 ns 0.65 0.01 False
62.79 ns 53.63 ns 0.85 0.01 False
23.23 ns 21.00 ns 0.90 0.04 False
244.57 ns 186.76 ns 0.76 0.01 False
147.11 ns 88.99 ns 0.60 0.01 False

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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.Encodings.Web.Tests.Perf_Encoders*'

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: Url,�2020,512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: UnsafeRelaxed,hello "there",512)

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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.EncodeUtf16(arguments: JavaScript,&Hello+<World>!,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.EncodeUtf16(arguments: JavaScript,&Hello+<World>!,512)

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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.EncodeUtf8(arguments: UnsafeRelaxed,no <escaping /> required,512)

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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: JavaScript,no escaping required,16)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: Url,&lorem ipsum=dolor sit amet,512)

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System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments: Url,&lorem ipsum=dolor sit amet,16)

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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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Xml.Linq.Perf_XName

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
54.64 ns 50.62 ns 0.93 0.01 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 'System.Xml.Linq.Perf_XName*'

System.Xml.Linq.Perf_XName.CreateElementWithNamespace

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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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Buffers.Text.Tests.Utf8FormatterTests

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
75.72 ns 53.05 ns 0.70 0.06 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 'System.Buffers.Text.Tests.Utf8FormatterTests*'

System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDecimal(value: 123456.789)

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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_UInt64

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
46.01 ns 27.16 ns 0.59 0.03 False
12.15 ns 7.18 ns 0.59 0.21 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.Tests.Perf_UInt64*'

System.Tests.Perf_UInt64.TryParseHex(value: "FFFFFFFFFFFFFFFF")

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System.Tests.Perf_UInt64.TryParseHex(value: "3039")

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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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Guid

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
16.63 ns 13.07 ns 0.79 0.44 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 'System.Tests.Perf_Guid*'

System.Tests.Perf_Guid.GuidToString

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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Xml.Linq.Perf_XElement

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
34.55 ns 24.14 ns 0.70 0.48 False
17.31 ns 14.86 ns 0.86 0.44 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.Xml.Linq.Perf_XElement*'

System.Xml.Linq.Perf_XElement.GetElement

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System.Xml.Linq.Perf_XElement.GetAttribute

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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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Text.Json.Serialization.Tests.WriteJson<SimpleStructWithProperties>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
89.74 ns 84.42 ns 0.94 0.02 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 'System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;*'

System.Text.Json.Serialization.Tests.WriteJson<SimpleStructWithProperties>.SerializeToWriter(Mode: SourceGen)

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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Buffers.Text.Tests.Utf8ParserTests

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
52.53 ns 43.49 ns 0.83 0.09 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 'System.Buffers.Text.Tests.Utf8ParserTests*'

System.Buffers.Text.Tests.Utf8ParserTests.TryParseDecimal(value: 123456.789)

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 811da242e182f376b4d915ec7abb16c1e852462e
Compare 4faabd3922eb3889d20c37cec235f390fe1c389d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Text.Json.Serialization.Tests.WriteJson<BinaryData>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
334.89 ns 240.28 ns 0.72 0.05 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 'System.Text.Json.Serialization.Tests.WriteJson&lt;BinaryData&gt;*'

System.Text.Json.Serialization.Tests.WriteJson<BinaryData>.SerializeToWriter(Mode: SourceGen)

ETL Files

Histogram

JIT Disasms

Docs

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

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