[Perf] Windows/x64: 1 Regression on 5/27/2026 2:58:50 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ac7b8a0391e871a3b07bec217d87cf275423016f](https://github.com/dotnet/runtime/commit/ac7b8a0391e871a3b07bec217d87cf275423016f)
Compare | [2a546738e968e3f75092657d4bee6bd21821e069](https://github.com/dotnet/runtime/commit/2a546738e968e3f75092657d4bee6bd21821e069)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac7b8a0391e871a3b07bec217d87cf275423016f...2a546738e968e3f75092657d4bee6bd21821e069)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Threading.Tests.Perf_Timer

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

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

| 16.80 secs | 21.45 secs | 1.28 | 0.76 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Threading.Tests.Perf_Timer*'
```

### System.Threading.Tests.Perf_Timer.AsynchronousContention

#### 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)