[Perf] Windows/x86: 1 Improvement on 7/27/2026 3:32:34 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [68fdb23f5c6b09942af65bdf339e305f03d53567](https://github.com/dotnet/runtime/commit/68fdb23f5c6b09942af65bdf339e305f03d53567)
Compare | [69d18c7af02f97ed5588f06adb0f63491c1b2be1](https://github.com/dotnet/runtime/commit/69d18c7af02f97ed5588f06adb0f63491c1b2be1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/68fdb23f5c6b09942af65bdf339e305f03d53567...69d18c7af02f97ed5588f06adb0f63491c1b2be1)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.IO.Tests.Perf_RandomAccess

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

• [ReadAsync - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_RandomAccess*'
```

### System.IO.Tests.Perf_RandomAccess.ReadAsync(fileSize: 1048576, bufferSize: 4096, options: Asynchronous)

#### 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)

Start with the linked benchmark source in performance/src/benchmarks/micro/libraries/System.IO.FileSystem/Perf.RandomAccess.cs and run the provided benchmarks_ci.py command for System.IO.Tests.Perf_RandomAccess. Review the baseline/compare data and profiling workflow documentation; the issue does not define a code change or acceptance criterion, so completion would require triage first.

Written by the indexing model from the issue text.