[Perf] Linux/arm64: 1 Improvement on 8/7/2026 11:43:54 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | azurelinux 3.0
Queue | CobaltAzureLinux
Baseline | [45fb46d810550207fe12a2b02dabec25f47c71ad](https://github.com/dotnet/runtime/commit/45fb46d810550207fe12a2b02dabec25f47c71ad)
Compare | [a94502c975d011f1a3a4da9755f10fff1a57391d](https://github.com/dotnet/runtime/commit/a94502c975d011f1a3a4da9755f10fff1a57391d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/45fb46d810550207fe12a2b02dabec25f47c71ad...a94502c975d011f1a3a4da9755f10fff1a57391d)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Memory.ReadOnlyMemory<Char>

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

• [Pin - 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.Memory.ReadOnlyMemory*'
```

### System.Memory.ReadOnlyMemory<Char>.Pin(Size: 512)

#### 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 at src/benchmarks/micro/libraries/System.Memory/ReadOnlyMemory.cs#L27-L34 and reproduce it using the provided benchmarks_ci.py command. Compare the baseline, test report, and linked history for ReadOnlyMemory.Pin(Size: 512); the work is done when the performance change is explained or addressed and the benchmark result is validated.

Written by the indexing model from the issue text.