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[Perf] Windows/x64: 24 Improvements on 8/16/2025 4:36:35 PM +00:00 #60908

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Int32

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
9.32 ns 7.31 ns 0.78 0.02 False
39.50 ns 30.66 ns 0.78 0.14 False
41.66 ns 34.27 ns 0.82 0.17 False
21.88 ns 17.75 ns 0.81 0.31 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int32*'

System.Tests.Perf_Int32.TryParse(value: "4")

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System.Tests.Perf_Int32.ParseHex(value: "7FFFFFFF")

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System.Tests.Perf_Int32.ParseHex(value: "80000000")

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System.Tests.Perf_Int32.ParseHex(value: "3039")

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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 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Enum

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
18.49 ns 16.96 ns 0.92 0.03 False
13.71 ns 12.52 ns 0.91 0.06 False
20.95 ns 18.68 ns 0.89 0.11 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.Tests.Perf_Enum*'

System.Tests.Perf_Enum.ToString_Format_NonFlags(value: Thursday, format: "f")

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System.Tests.Perf_Enum.ToString_Format_NonFlags(value: Monday, format: "g")

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System.Tests.Perf_Enum.GetValuesAsUnderlyingType_Generic

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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 Windows 10.0.22621
Queue TigerWindows
Baseline 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_UInt32

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
20.35 ns 18.95 ns 0.93 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_UInt32*'

System.Tests.Perf_UInt32.Parse(value: "4294967295")

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 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in PerfLabTests.LowLevelPerf

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.73 ms 1.43 ms 0.52 0.06 False
403.80 μs 374.32 μs 0.93 0.02 False
311.94 μs 280.73 μs 0.90 0.01 False
187.16 μs 156.01 μs 0.83 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.LowLevelPerf*'

PerfLabTests.LowLevelPerf.EmptyStaticFunction

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PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodLongHierarchy

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PerfLabTests.LowLevelPerf.StaticDelegate

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PerfLabTests.LowLevelPerf.StructWithInterfaceInterfaceMethod

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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 x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Numerics.Tests.Perf_VectorConvert

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.57 μs 1.26 μs 0.80 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.Numerics.Tests.Perf_VectorConvert*'

System.Numerics.Tests.Perf_VectorConvert.Widen_float

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 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in PerfLabTests.CastingPerf2.CastingPerf

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
313.52 μs 286.80 μs 0.91 0.04 False
495.47 μs 374.31 μs 0.76 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 'PerfLabTests.CastingPerf2.CastingPerf*'

PerfLabTests.CastingPerf2.CastingPerf.IFooObjIsIFooInterAlia

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PerfLabTests.CastingPerf2.CastingPerf.FooObjIsNull

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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 x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_UInt16

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
15.03 ns 13.80 ns 0.92 0.07 False
10.58 ns 9.16 ns 0.87 0.03 False
10.58 ns 9.13 ns 0.86 0.03 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.Tests.Perf_UInt16*'

System.Tests.Perf_UInt16.TryParse(value: "65535")

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System.Tests.Perf_UInt16.ToString(value: 65535)

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System.Tests.Perf_UInt16.ToString(value: 12345)

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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 x64
OS Windows 10.0.22621
Queue TigerWindows
Baseline 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Linq.Tests.Perf_Enumerable

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
182.43 ns 152.77 ns 0.84 0.10 False
909.13 ns 693.89 ns 0.76 0.22 False
59.89 ns 49.41 ns 0.83 0.04 False
183.89 ns 150.19 ns 0.82 0.05 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Linq.Tests.Perf_Enumerable*'

System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.ToDictionary(input: Array)

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System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: Array)

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 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in System.Tests.Perf_Byte

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
12.43 ns 11.38 ns 0.92 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Byte*'

System.Tests.Perf_Byte.TryParse(value: "255")

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 1209ddec456f1d7871847b07b46f00d44012d687
Compare 10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Improvements in Loops.StrengthReduction

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
6.25 μs 4.76 μs 0.76 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 'Loops.StrengthReduction*'

Loops.StrengthReduction.SumS3Span

ETL Files

Histogram

JIT Disasms

Docs

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

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