[Perf] Windows/x86: 1 Regression on 3/21/2026 6:39:46 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [5ab4f9b0794aaaa45505fe9c862f3216662d24c2](https://github.com/dotnet/runtime/commit/5ab4f9b0794aaaa45505fe9c862f3216662d24c2)
Compare | [df182629204a1f4cbe8a64c4ff4fa29dc8377991](https://github.com/dotnet/runtime/commit/df182629204a1f4cbe8a64c4ff4fa29dc8377991)
Diff | [Diff](https://github.com/dotnet/runtime/compare/5ab4f9b0794aaaa45505fe9c862f3216662d24c2...df182629204a1f4cbe8a64c4ff4fa29dc8377991)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.IO.Tests.Perf_RandomAccess

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

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

| 2.42 ms | 3.71 ms | 1.54 | 0.60 | 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_RandomAccess*'
```

### System.IO.Tests.Perf_RandomAccess.ReadScatterAsync(fileSize: 1048576, buffersSize: 16384, 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)