[Perf] Windows/x86: 1 Improvement on 3/20/2026 12:00:50 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [1f751dacd08cf7599c64d7c243c52f85c54cb979](https://github.com/dotnet/runtime/commit/1f751dacd08cf7599c64d7c243c52f85c54cb979)
Compare | [6a815e85a7ed3fadeb42adbc805da3f2dacc1fe5](https://github.com/dotnet/runtime/commit/6a815e85a7ed3fadeb42adbc805da3f2dacc1fe5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1f751dacd08cf7599c64d7c243c52f85c54cb979...6a815e85a7ed3fadeb42adbc805da3f2dacc1fe5)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.IO.Tests.Perf_File

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

• [ReadAllBytesAsync - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 41.87 μs | 27.85 μs | 0.67 | 0.62 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_File*'
```

### System.IO.Tests.Perf_File.ReadAllBytesAsync(size: 4096)

#### 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)