[Perf] Linux/arm64: 1 Improvement on 5/21/2026 5:15:10 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [fdea14daa5ed67788f0ea26d4395e2652cd1ce79](https://github.com/dotnet/runtime/commit/fdea14daa5ed67788f0ea26d4395e2652cd1ce79)
Compare | [41bb922718740abce190a20adff49b634f408caf](https://github.com/dotnet/runtime/commit/41bb922718740abce190a20adff49b634f408caf)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fdea14daa5ed67788f0ea26d4395e2652cd1ce79...41bb922718740abce190a20adff49b634f408caf)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.IO.Tests.Perf_Path

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

• [GetFileName - 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_Path*'
```

### System.IO.Tests.Perf_Path.GetFileName

#### 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)