[Perf] Linux/x64: 1 Regression on 5/7/2026 9:53:52 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [06ca6751830996c1c815bfdd73a3fb4c8b53d77f](https://github.com/dotnet/runtime/commit/06ca6751830996c1c815bfdd73a3fb4c8b53d77f)
Compare | [41fad311c8c3d2ae2c5582e16150856313f2bbfe](https://github.com/dotnet/runtime/commit/41fad311c8c3d2ae2c5582e16150856313f2bbfe)
Diff | [Diff](https://github.com/dotnet/runtime/compare/06ca6751830996c1c815bfdd73a3fb4c8b53d77f...41fad311c8c3d2ae2c5582e16150856313f2bbfe)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.IO.Tests.Perf_File

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

• [CopyTo - 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.Perf_File*'
```

### System.IO.Tests.Perf_File.CopyTo(size: 1048576)

#### 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)