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[Perf] Linux/x64: 40 Improvements on 9/9/2025 8:46:29 PM +00:00 #62693

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Collections.CreateAddAndClear<String>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
11.87 μs 9.51 μs 0.80 0.07 False
11.03 μs 9.24 μs 0.84 0.08 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.Collections.CreateAddAndClear&lt;String&gt;*'

System.Collections.CreateAddAndClear<String>.ICollection(Size: 512)

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System.Collections.CreateAddAndClear<String>.LinkedList(Size: 512)

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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 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.82 ns 0.00 ns 0.00 0.64 False
3.69 ns 1.37 ns 0.37 0.57 False
2.02 ns 0.56 ns 0.28 0.59 False
2.57 ns 1.36 ns 0.53 0.57 False
2.50 ns 1.26 ns 0.50 0.64 False

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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.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;Single&gt;*'

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.SubtractBenchmark

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System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.ExclusiveOrOperatorBenchmark

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System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.BitwiseOrBenchmark

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System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.GreaterThanBenchmark

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System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.AddBenchmark

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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 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, 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
1.64 μs 1.49 μs 0.91 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.Text.Json.Tests.Perf_Get*'

System.Text.Json.Tests.Perf_Get.GetUInt64

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Collections.Perf_Frozen<ReferenceType>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
245.23 ns 193.00 ns 0.79 0.16 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.Collections.Perf_Frozen&lt;ReferenceType&gt;*'

System.Collections.Perf_Frozen<ReferenceType>.Contains_True(Count: 4)

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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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Numerics.Tests.Perf_VectorOf<Single>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.08 ns 0.59 ns 0.28 0.56 False
2.54 ns 1.29 ns 0.51 0.52 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.Tests.Perf_VectorOf&lt;Single&gt;*'

System.Numerics.Tests.Perf_VectorOf<Single>.MaxBenchmark

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Histogram

JIT Disasms

System.Numerics.Tests.Perf_VectorOf<Single>.BitwiseAndBenchmark

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Numerics.Tests.Perf_VectorOf<UInt64>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
3.21 ns 1.34 ns 0.42 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_VectorOf&lt;UInt64&gt;*'

System.Numerics.Tests.Perf_VectorOf<UInt64>.BitwiseOrBenchmark

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<UInt64>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.48 ns 1.24 ns 0.50 0.62 False
2.16 ns 0.76 ns 0.35 0.59 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.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;UInt64&gt;*'

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<UInt64>.BitwiseOrOperatorBenchmark

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Histogram

JIT Disasms

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<UInt64>.AddBenchmark

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in XmlDocumentTests.XmlDocumentTests.Perf_XmlDocument

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
411.52 ns 375.13 ns 0.91 0.12 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 'XmlDocumentTests.XmlDocumentTests.Perf_XmlDocument*'

XmlDocumentTests.XmlDocumentTests.Perf_XmlDocument.Create

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Numerics.Tests.Perf_Vector4

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
18.68 ns 15.73 ns 0.84 0.65 False
16.34 ns 13.58 ns 0.83 0.68 False
16.74 ns 12.37 ns 0.74 0.58 False
17.95 ns 15.00 ns 0.84 0.65 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_Vector4*'

System.Numerics.Tests.Perf_Vector4.MultiplyByScalarBenchmark

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System.Numerics.Tests.Perf_Vector4.CreateFromVector3WithScalarBenchmark

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System.Numerics.Tests.Perf_Vector4.UnitWBenchmark

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System.Numerics.Tests.Perf_Vector4.MultiplyByScalarOperatorBenchmark

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in Span.IndexerBench

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
720.89 ns 644.53 ns 0.89 0.00 False
718.33 ns 451.14 ns 0.63 0.00 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 'Span.IndexerBench*'

Span.IndexerBench.SameIndex2(length: 1024)

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Span.IndexerBench.Indexer6(length: 1024)

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in PerfLabTests.LowLevelPerf

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
176.60 μs 165.68 μs 0.94 0.06 False
58.27 μs 44.14 μs 0.76 0.06 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 'PerfLabTests.LowLevelPerf*'

PerfLabTests.LowLevelPerf.SealedClassInterfaceMethod

ETL Files

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JIT Disasms

PerfLabTests.LowLevelPerf.StructWithInterfaceInterfaceMethod

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 ubuntu 22.04
Queue ViperUbuntu
Baseline 3605ab46c30647a5f85629447f25401c2999026d
Compare 46f3e902e9cf83547330e77c6e7698fab06e85ba
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Improvements in System.Tests.Perf_Half

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
4.09 ns 2.99 ns 0.73 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.Tests.Perf_Half*'

System.Tests.Perf_Half.HalfToSingle(value: NaN)

ETL Files

Histogram

JIT Disasms

Docs

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

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