[Perf] Linux/arm64: 1 Improvement on 5/25/2026 9:28:02 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | azurelinux 3.0
Queue | CobaltAzureLinux
Baseline | [d198593b0563cd5364893144acddd454545df392](https://github.com/dotnet/runtime/commit/d198593b0563cd5364893144acddd454545df392)
Compare | [7f58900c3cf86d52fdd70bc95d697ab50ab7475a](https://github.com/dotnet/runtime/commit/7f58900c3cf86d52fdd70bc95d697ab50ab7475a)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d198593b0563cd5364893144acddd454545df392...7f58900c3cf86d52fdd70bc95d697ab50ab7475a)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.IO.Tests.Perf_FileStream

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

• [WriteByte - 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_FileStream*'
```

### System.IO.Tests.Perf_FileStream.WriteByte(fileSize: 1024, 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)