dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 10 Regressions on 5/14/2026 10:06:04 PM +00:00

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

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [553d88792317e028eff9703301d84fab46ba095d](https://github.com/dotnet/runtime/commit/553d88792317e028eff9703301d84fab46ba095d)
Compare | [1858a246d34c00584f7138196b44564702bfa552](https://github.com/dotnet/runtime/commit/1858a246d34c00584f7138196b44564702bfa552)
Diff | [Diff](https://github.com/dotnet/runtime/compare/553d88792317e028eff9703301d84fab46ba095d...1858a246d34c00584f7138196b44564702bfa552)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.MathBenchmarks.Single

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

  • [Atan - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 44.06 μs | 65.03 μs | 1.48 | 0.23 | False | | |
|
  • [AsinPi - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 44.36 μs | 60.29 μs | 1.36 | 0.07 | False | | |
|
  • [Log10P1 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 111.41 μs | 143.17 μs | 1.29 | 0.48 | False | | |
|
  • [Sin - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 41.53 μs | 48.58 μs | 1.17 | 0.30 | False | | |
|
  • [AcosPi - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 48.50 μs | 55.68 μs | 1.15 | 0.05 | False | | |

![graph]()
![graph]()
![graph]()
![graph]()
![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.MathBenchmarks.Single*'
```

### System.MathBenchmarks.Single.Atan

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.AsinPi

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Log10P1

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Sin

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.AcosPi

#### 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 | [553d88792317e028eff9703301d84fab46ba095d](https://github.com/dotnet/runtime/commit/553d88792317e028eff9703301d84fab46ba095d)
Compare | [1858a246d34c00584f7138196b44564702bfa552](https://github.com/dotnet/runtime/commit/1858a246d34c00584f7138196b44564702bfa552)
Diff | [Diff](https://github.com/dotnet/runtime/compare/553d88792317e028eff9703301d84fab46ba095d...1858a246d34c00584f7138196b44564702bfa552)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.MathBenchmarks.Double

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

  • [Acos - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 53.18 μs | 67.68 μs | 1.27 | 0.35 | False | | |
|
  • [Cos - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 58.94 μs | 70.77 μs | 1.20 | 0.26 | False | | |

![graph]()
![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.MathBenchmarks.Double*'
```

### System.MathBenchmarks.Double.Acos

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Double.Cos

#### 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 | [553d88792317e028eff9703301d84fab46ba095d](https://github.com/dotnet/runtime/commit/553d88792317e028eff9703301d84fab46ba095d)
Compare | [1858a246d34c00584f7138196b44564702bfa552](https://github.com/dotnet/runtime/commit/1858a246d34c00584f7138196b44564702bfa552)
Diff | [Diff](https://github.com/dotnet/runtime/compare/553d88792317e028eff9703301d84fab46ba095d...1858a246d34c00584f7138196b44564702bfa552)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>

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

  • [CosineSimilarity - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 103.52 μs | 130.37 μs | 1.26 | 0.35 | 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.Tensors.Tests.Perf_FloatingPointTensorPrimitives*'
```

### System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>.CosineSimilarity(BufferLength: 3079)

#### 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 | [553d88792317e028eff9703301d84fab46ba095d](https://github.com/dotnet/runtime/commit/553d88792317e028eff9703301d84fab46ba095d)
Compare | [1858a246d34c00584f7138196b44564702bfa552](https://github.com/dotnet/runtime/commit/1858a246d34c00584f7138196b44564702bfa552)
Diff | [Diff](https://github.com/dotnet/runtime/compare/553d88792317e028eff9703301d84fab46ba095d...1858a246d34c00584f7138196b44564702bfa552)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in Benchstone.BenchI.CSieve

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

  • [Test - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 11.65 ms | 13.79 ms | 1.18 | 0.02 | 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 'Benchstone.BenchI.CSieve*'
```

### Benchstone.BenchI.CSieve.Test

#### 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 | [553d88792317e028eff9703301d84fab46ba095d](https://github.com/dotnet/runtime/commit/553d88792317e028eff9703301d84fab46ba095d)
Compare | [1858a246d34c00584f7138196b44564702bfa552](https://github.com/dotnet/runtime/commit/1858a246d34c00584f7138196b44564702bfa552)
Diff | [Diff](https://github.com/dotnet/runtime/compare/553d88792317e028eff9703301d84fab46ba095d...1858a246d34c00584f7138196b44564702bfa552)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_Vector3

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

  • [ReflectBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 154.80 ns | 182.49 ns | 1.18 | 0.40 | 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_Vector3*'
```

### System.Numerics.Tests.Perf_Vector3.ReflectBenchmark

#### 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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