dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 4 Regressions on 5/22/2026 11:01:51 AM +00:00

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aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro os-linux perf-regression runkind-micro triage-error untriaged wasm-aot
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [41bb922718740abce190a20adff49b634f408caf](https://github.com/dotnet/runtime/commit/41bb922718740abce190a20adff49b634f408caf)
Compare | [0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f](https://github.com/dotnet/runtime/commit/0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/41bb922718740abce190a20adff49b634f408caf...0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Int

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [MultiplyBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 1.75 ns | 150.00 ns | 85.89 | 0.46 | False | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Int*'
```

### System.Runtime.Intrinsics.Tests.Perf_Vector128Int.MultiplyBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [41bb922718740abce190a20adff49b634f408caf](https://github.com/dotnet/runtime/commit/41bb922718740abce190a20adff49b634f408caf)
Compare | [0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f](https://github.com/dotnet/runtime/commit/0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/41bb922718740abce190a20adff49b634f408caf...0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_VectorOf<Int32>

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [BitwiseAndBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.46 ns | 43.75 ns | 17.78 | 0.48 | False | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_VectorOf*'
```

### System.Numerics.Tests.Perf_VectorOf<Int32>.BitwiseAndBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [41bb922718740abce190a20adff49b634f408caf](https://github.com/dotnet/runtime/commit/41bb922718740abce190a20adff49b634f408caf)
Compare | [0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f](https://github.com/dotnet/runtime/commit/0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/41bb922718740abce190a20adff49b634f408caf...0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Float

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [EqualsStaticBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 1.77 ns | 4.60 ns | 2.59 | 0.43 | False | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Float*'
```

### System.Runtime.Intrinsics.Tests.Perf_Vector128Float.EqualsStaticBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [41bb922718740abce190a20adff49b634f408caf](https://github.com/dotnet/runtime/commit/41bb922718740abce190a20adff49b634f408caf)
Compare | [0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f](https://github.com/dotnet/runtime/commit/0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/41bb922718740abce190a20adff49b634f408caf...0e2d6c5809808067e82ebb6b1ec1c4f1f99e057f)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_Vector4

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [SubtractOperatorBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.47 ns | 175.00 ns | 70.79 | 0.45 | False | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
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.SubtractOperatorBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

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Assessment

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