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[Perf] Linux/x64: 36 Improvements on 8/12/2025 6:48:24 PM +00:00 #60820

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
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
63.38 ns 43.18 ns 0.68 0.14 False
43.12 ns 38.15 ns 0.88 0.07 False
56.02 ns 40.28 ns 0.72 0.03 False
82.18 ns 56.46 ns 0.69 0.31 False
26.39 ns 19.19 ns 0.73 0.09 False
30.20 ns 25.49 ns 0.84 0.08 False
96.02 ns 64.26 ns 0.67 0.06 False
69.08 ns 43.10 ns 0.62 0.02 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.EncodeUtf16(arguments: JavaScript,&Hello+<World>!,16)

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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.EncodeUtf16(arguments: Url,�2020,16)

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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 x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Collections.CtorFromCollectionNonGeneric<Int32>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
7.23 μs 6.41 μs 0.89 0.32 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.Collections.CtorFromCollectionNonGeneric&lt;Int32&gt;*'

System.Collections.CtorFromCollectionNonGeneric<Int32>.Stack(Size: 512)

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
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
12.09 ns 10.33 ns 0.85 0.13 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.Xml.Linq.Perf_XName*'

System.Xml.Linq.Perf_XName.CreateElement

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Text.Json.Tests.Perf_Reader

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.62 μs 1.49 μs 0.92 0.03 False
54.44 ns 43.78 ns 0.80 0.14 False
3.60 μs 3.25 μs 0.90 0.06 False

graph
graph
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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.Json.Tests.Perf_Reader*'

System.Text.Json.Tests.Perf_Reader.ReadSpanEmptyLoop(IsDataCompact: True, TestCase: DeepTree)

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System.Text.Json.Tests.Perf_Reader.ReadSpanEmptyLoop(IsDataCompact: True, TestCase: HelloWorld)

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System.Text.Json.Tests.Perf_Reader.ReadSpanEmptyLoop(IsDataCompact: True, TestCase: BroadTree)

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JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Version

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
39.21 ns 36.62 ns 0.93 0.01 False
18.58 ns 17.43 ns 0.94 0.06 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.Tests.Perf_Version*'

System.Tests.Perf_Version.Parse4

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System.Tests.Perf_Version.TryParse2

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
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
69.58 ns 38.49 ns 0.55 0.11 False
16.93 ns 13.55 ns 0.80 0.02 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.Buffers.Text.Tests.Utf8FormatterTests*'

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

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System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDateTimeOffsetNow(value: 12/30/2017 3:45:22 AM -08:00)

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
948.03 ns 700.99 ns 0.74 0.04 False
23.72 μs 16.49 μs 0.70 0.03 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.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives&lt;Double&gt;*'

System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>.Ieee754Remainder_ScalarDividend(BufferLength: 128)

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System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>.Ieee754Remainder_ScalarDividend(BufferLength: 3079)

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in Benchstone.MDBenchI.MDGeneralArray

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
10.14 ms 8.99 ms 0.89 0.17 False
10.11 ms 9.00 ms 0.89 0.22 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 'Benchstone.MDBenchI.MDGeneralArray*'

Benchstone.MDBenchI.MDGeneralArray.Test2

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Benchstone.MDBenchI.MDGeneralArray.Test

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JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
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
25.65 ns 9.59 ns 0.37 0.06 False
6.70 ns 2.88 ns 0.43 0.01 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 x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
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
16.75 ns 7.87 ns 0.47 0.21 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

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Docs

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


Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 811da242e182f376b4d915ec7abb16c1e852462e
Compare 507f50e5e55ce5a8df2cbbd7084b2df5b65e4f03
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.IO.Tests.Perf_Path

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
27.90 ns 17.74 ns 0.64 0.39 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.IO.Tests.Perf_Path*'

System.IO.Tests.Perf_Path.GetFileNameWithoutExtension

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Docs

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

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