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[Perf] Windows/x64: 14 Improvements on 7/10/2025 8:38:35 PM +00:00 #59349

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.IO.Tests.Perf_File

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
218.81 μs 156.36 μs 0.71 0.62 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_File*'

System.IO.Tests.Perf_File.AppendAllTextAsync(size: 10000)

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Char

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
18.31 ns 16.29 ns 0.89 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Char*'

System.Tests.Perf_Char.Char_ToLower(c: '你', cultureName: zh-Hans)

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Globalization.Tests.StringSearch

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
13.30 ns 11.45 ns 0.86 0.09 False
13.71 ns 11.51 ns 0.84 0.08 False
13.30 ns 11.50 ns 0.86 0.05 False

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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringSearch*'

System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options: (, None, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options: (en-US, None, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options: (en-US, IgnoreNonSpace, False))

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in Benchstone.MDBenchI.MDNDhrystone

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
382.61 ms 342.01 ms 0.89 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Benchstone.MDBenchI.MDNDhrystone*'

Benchstone.MDBenchI.MDNDhrystone.Test

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in IfStatements.IfStatements

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
82.83 μs 75.13 μs 0.91 0.01 False
82.91 μs 74.49 μs 0.90 0.00 False
31.20 μs 28.09 μs 0.90 0.00 False

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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'IfStatements.IfStatements*'

IfStatements.IfStatements.AndArray

ETL Files

Histogram

JIT Disasms

IfStatements.IfStatements.OrArray

ETL Files

Histogram

JIT Disasms

IfStatements.IfStatements.SingleArray

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in SeekUnroll

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.51 secs 2.02 secs 0.80 0.01 False
2.18 secs 1.59 secs 0.73 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'SeekUnroll*'

SeekUnroll.Test(boxedIndex: 19)

ETL Files

Histogram

JIT Disasms

SeekUnroll.Test(boxedIndex: 11)

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Text.Json.Tests.Perf_Get

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
563.66 ns 472.06 ns 0.84 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Get*'

System.Text.Json.Tests.Perf_Get.GetUInt32

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Runtime.Intrinsics.Tests.Perf_Vector128Int

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.34 ns 1.13 ns 0.48 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Int*'

System.Runtime.Intrinsics.Tests.Perf_Vector128Int.DivideBenchmark

ETL Files

Histogram

JIT Disasms

Docs

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


Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 45e14ea5e8d2646693299e68310cad7603bbe4c8
Compare 1fd2ed8864735c7d745cbace89b18de967d521fb
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_DateTime

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
23.94 ns 19.88 ns 0.83 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_DateTime*'

System.Tests.Perf_DateTime.ToString(format: "s")

ETL Files

Histogram

JIT Disasms

Docs

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

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