[Perf] Linux/x64: 1 Regression on 5/18/2026 1:06:36 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [f44c762122923c69a9c1072517492c2b7460690f](https://github.com/dotnet/runtime/commit/f44c762122923c69a9c1072517492c2b7460690f)
Compare | [f41aba36d821378cab52741e15e4ab7446b7929e](https://github.com/dotnet/runtime/commit/f41aba36d821378cab52741e15e4ab7446b7929e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f44c762122923c69a9c1072517492c2b7460690f...f41aba36d821378cab52741e15e4ab7446b7929e)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Collections.ContainsTrueComparer<String>

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

• [SortedSet - 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.Collections.ContainsTrueComparer*'
```

### System.Collections.ContainsTrueComparer<String>.SortedSet(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 reported benchmark source at src/benchmarks/micro/libraries/System.Collections/Contains/ContainsTrueComparer.cs#L61-L70 and run the provided benchmarks_ci.py command for the filter. Compare the baseline and test commits and use the linked test report or profiling workflow to investigate the SortedSet regression. Done means the cause is identified and the benchmark no longer shows the reported performance regression.

Written by the indexing model from the issue text.