[Perf] Linux/x64: 1 Regression on 5/9/2026 7:00:45 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [6b1231dfc6422ae67c7c75371b79ba21d499ba3b](https://github.com/dotnet/runtime/commit/6b1231dfc6422ae67c7c75371b79ba21d499ba3b)
Compare | [c701e381728c5e2cac9e8e8298b9d8921d6f751d](https://github.com/dotnet/runtime/commit/c701e381728c5e2cac9e8e8298b9d8921d6f751d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/6b1231dfc6422ae67c7c75371b79ba21d499ba3b...c701e381728c5e2cac9e8e8298b9d8921d6f751d)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Collections.Tests.Perf_PriorityQueue<String, String>

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

• [K_Max_Elements - 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.Tests.Perf_PriorityQueue*'
```

### System.Collections.Tests.Perf_PriorityQueue<String, String>.K_Max_Elements(Size: 10)

#### 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 benchmark source at src/benchmarks/micro/libraries/System.Collections/PriorityQueue/Perf_PriorityQueue.cs#L85-L108 and reproduce the reported System.Collections.Tests.Perf_PriorityQueue result using the provided benchmarks_ci.py command. Compare the baseline and test commits, then investigate the source of the K_Max_Elements regression. Done means the regression is explained and the benchmark no longer shows the reported slowdown.

Written by the indexing model from the issue text.