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[Perf] Linux/x64: 56 Regressions on 10/17/2025 6:02:57 AM +00:00 #64281

@performanceautofiler

Description

@performanceautofiler

Run Information

Name Value
Architecture x64
OS ubuntu 22.04
Queue ViperUbuntu
Baseline 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Globalization.Tests.StringSearch

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
2.52 μs 2.86 μs 1.14 0.08 False
2.50 μs 2.85 μs 1.14 0.11 False
2.54 μs 2.86 μs 1.13 0.12 False
2.61 μs 2.89 μs 1.11 0.07 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.Globalization.Tests.StringSearch*'

System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options: (, None, True))

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System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options: (pl-PL, None, False))

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System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options: (en-US, IgnoreCase, True))

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System.Globalization.Tests.StringSearch.IsPrefix_FirstHalf(Options: (en-US, None, True))

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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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Collections.CreateAddAndClear<String>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
8.54 μs 12.39 μs 1.45 0.08 False
9.20 μs 11.03 μs 1.20 0.07 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<String>*'

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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Numerics.Tests.Perf_Vector2

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
14.63 ns 18.92 ns 1.29 0.60 False
11.12 ns 13.36 ns 1.20 0.57 False
12.47 ns 16.49 ns 1.32 0.54 False
17.34 ns 19.22 ns 1.11 0.65 False
7.69 ns 14.04 ns 1.83 0.49 False
9.90 ns 19.32 ns 1.95 0.69 False
11.01 ns 13.92 ns 1.26 0.60 False
11.84 ns 17.88 ns 1.51 0.68 False
11.94 ns 17.91 ns 1.50 0.60 False
10.45 ns 18.64 ns 1.78 0.65 False
12.10 ns 18.32 ns 1.51 0.59 False
13.89 ns 18.22 ns 1.31 0.65 False
13.61 ns 17.41 ns 1.28 0.71 False

graph
graph
graph
graph
graph
graph
graph
graph
graph
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_Vector2*'

System.Numerics.Tests.Perf_Vector2.MultiplyOperatorBenchmark

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System.Numerics.Tests.Perf_Vector2.DivideByVector2Benchmark

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System.Numerics.Tests.Perf_Vector2.AddFunctionBenchmark

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System.Numerics.Tests.Perf_Vector2.MinBenchmark

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System.Numerics.Tests.Perf_Vector2.ReflectBenchmark

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System.Numerics.Tests.Perf_Vector2.MaxBenchmark

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System.Numerics.Tests.Perf_Vector2.DivideByVector2OperatorBenchmark

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System.Numerics.Tests.Perf_Vector2.DivideByScalarOperatorBenchmark

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System.Numerics.Tests.Perf_Vector2.SubtractOperatorBenchmark

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System.Numerics.Tests.Perf_Vector2.SubtractFunctionBenchmark

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System.Numerics.Tests.Perf_Vector2.AddOperatorBenchmark

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System.Numerics.Tests.Perf_Vector2.DivideByScalarBenchmark

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System.Numerics.Tests.Perf_Vector2.ClampBenchmark

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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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Memory.Constructors<Byte>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.85 ns 3.39 ns 1.83 0.56 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.Memory.Constructors<Byte>*'

System.Memory.Constructors<Byte>.ArrayAsSpan

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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

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

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
0.84 ns 2.18 ns 2.60 0.59 False
0.75 ns 2.12 ns 2.81 0.61 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<Single>*'

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

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JIT Disasms

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Numerics.Tests.Perf_VectorOf<Int64>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.12 ns 2.14 ns 1.91 0.63 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<Int64>*'

System.Numerics.Tests.Perf_VectorOf<Int64>.AndNotBenchmark

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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Collections.TryGetValueFalse<Int32, Int32>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
8.64 μs 9.64 μs 1.12 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.Collections.TryGetValueFalse<Int32, Int32>*'

System.Collections.TryGetValueFalse<Int32, Int32>.FrozenDictionaryOptimized(Size: 512)

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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int64>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.67 ns 3.20 ns 1.91 0.64 False
1.35 ns 3.13 ns 2.32 0.60 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<Int64>*'

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int64>.BitwiseOrBenchmark

ETL Files

Histogram

JIT Disasms

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int64>.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 2a636511d7f4982577dd3dde9134d53b9b2686cc
Compare e8d0ad08596064674c07167813799198394ef499
Diff Diff
Configs AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Text.Json.Tests.Perf_Get

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.48 μs 1.65 μs 1.12 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
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

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