[Perf] Linux/x64: 1 Regression on 3/29/2026 6:08:21 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [874cab52de071b64461fa74562e226a24557e5f8](https://github.com/dotnet/runtime/commit/874cab52de071b64461fa74562e226a24557e5f8)
Compare | [cb0a046c48e317b06eedae0dee88b114457b6f00](https://github.com/dotnet/runtime/commit/cb0a046c48e317b06eedae0dee88b114457b6f00)
Diff | [Diff](https://github.com/dotnet/runtime/compare/874cab52de071b64461fa74562e226a24557e5f8...cb0a046c48e317b06eedae0dee88b114457b6f00)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>

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

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

| 1.02 ms | 1.29 ms | 1.26 | 0.23 | False | | |

[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.Text.Json.Serialization.Tests.WriteJson>*'
```

### System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>.SerializeToWriter(Mode: Reflection)

#### 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)