dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x86: 1 Improvement on 6/5/2026 6:40:02 PM +00:00

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arch-x86 branch-refs/heads/main compilationmode-tiered kind-micro os-windows perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [8df86ac78f1e4510c63880a6f93507af5fdd4ee4](https://github.com/dotnet/runtime/commit/8df86ac78f1e4510c63880a6f93507af5fdd4ee4)
Compare | [503cdd143baa519977f4e5f8cc7449fcbfc50c7b](https://github.com/dotnet/runtime/commit/503cdd143baa519977f4e5f8cc7449fcbfc50c7b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/8df86ac78f1e4510c63880a6f93507af5fdd4ee4...503cdd143baa519977f4e5f8cc7449fcbfc50c7b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Threading.Tests.Perf_Timer

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

  • [SynchronousContention - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 19.41 secs | 14.33 secs | 0.74 | 0.73 | 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.SynchronousContention

#### 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)

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Assessment

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