dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 8 Improvements on 3/26/2026 9:16:05 PM +00:00

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arch-wasm arch-x64 branch-refs/heads/main kind-micro os-linux perf-improvement untriaged wasm-aot
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [039ef3fc2820ca493545f5ec8d3248d4566bee07](https://github.com/dotnet/runtime/commit/039ef3fc2820ca493545f5ec8d3248d4566bee07)
Compare | [e5f4006c045d0054f6cc507591018448211236ea](https://github.com/dotnet/runtime/commit/e5f4006c045d0054f6cc507591018448211236ea)
Diff | [Diff](https://github.com/dotnet/runtime/compare/039ef3fc2820ca493545f5ec8d3248d4566bee07...e5f4006c045d0054f6cc507591018448211236ea)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_VectorConvert

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

  • [Widen_float - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.44 μs | 2.32 μs | 0.95 | 0.07 | False | | |
|
  • [Convert_ulong_double - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 5.83 μs | 2.94 μs | 0.50 | 0.12 | False | | |
|
  • [Narrow_long - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.56 μs | 2.77 μs | 0.78 | 0.17 | False | | |
|
  • [Narrow_short - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.39 μs | 3.18 μs | 0.94 | 0.12 | False | | |
|
  • [Widen_sbyte - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.65 μs | 2.40 μs | 0.90 | 0.05 | False | | |
|
  • [Narrow_ulong - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.29 μs | 2.77 μs | 0.84 | 0.12 | False | | |
|
  • [Convert_long_double - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.37 μs | 2.88 μs | 0.85 | 0.12 | False | | |

![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.Numerics.Tests.Perf_VectorConvert*'
```

### System.Numerics.Tests.Perf_VectorConvert.Widen_float

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Convert_ulong_double

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Narrow_long

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Narrow_short

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Widen_sbyte

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Narrow_ulong

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Convert_long_double

#### 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 | [039ef3fc2820ca493545f5ec8d3248d4566bee07](https://github.com/dotnet/runtime/commit/039ef3fc2820ca493545f5ec8d3248d4566bee07)
Compare | [e5f4006c045d0054f6cc507591018448211236ea](https://github.com/dotnet/runtime/commit/e5f4006c045d0054f6cc507591018448211236ea)
Diff | [Diff](https://github.com/dotnet/runtime/compare/039ef3fc2820ca493545f5ec8d3248d4566bee07...e5f4006c045d0054f6cc507591018448211236ea)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Tests.Perf_Enum

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

  • [ToString_Format_Flags_Large - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 74.27 ns | 64.93 ns | 0.87 | 0.17 | False | | |

[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.Tests.Perf_Enum*'
```

### System.Tests.Perf_Enum.ToString_Format_Flags_Large(value: All, format: "d")

#### 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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