[Perf] Linux/x64: 1 Improvement on 3/7/2026 5:41:53 AM -08:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [703be0833b619fab3b970175f0d391c097d1e17b](https://github.com/dotnet/runtime/commit/703be0833b619fab3b970175f0d391c097d1e17b)
Compare | [28baa459661f164b55d6409f9816178ced46146f](https://github.com/dotnet/runtime/commit/28baa459661f164b55d6409f9816178ced46146f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/703be0833b619fab3b970175f0d391c097d1e17b...28baa459661f164b55d6409f9816178ced46146f)
Configs | CompilationMode:wasm, RunKind:micro

### Improvements in System.Threading.Tests.Perf_Lock

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

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

| 157.76 ns | 125.47 ns | 0.80 | 0.11 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Threading.Tests.Perf_Lock*'
```

### System.Threading.Tests.Perf_Lock.ReaderWriterLockSlimPerf

#### 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)