[Perf] Linux/x64: 1 Improvement on 8/8/2026 5:46:44 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [4c86c57ac3a6569063da4cb0a7245aadbc276f00](https://github.com/dotnet/runtime/commit/4c86c57ac3a6569063da4cb0a7245aadbc276f00)
Compare | [d9162a8b5629465d37d6881f377e5773c202d1f7](https://github.com/dotnet/runtime/commit/d9162a8b5629465d37d6881f377e5773c202d1f7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4c86c57ac3a6569063da4cb0a7245aadbc276f00...d9162a8b5629465d37d6881f377e5773c202d1f7)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Buffers.Text.Tests.Utf8FormatterTests

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

• [FormatterDouble - 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.Buffers.Text.Tests.Utf8FormatterTests*'
```

### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDouble(value: 1.7976931348623157E+308)

#### 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 FormatterDouble benchmark in performance/src/benchmarks/micro/libraries/System.Buffers/Utf8FormatterTests.cs and the benchmarking workflow linked in the issue. Reproduce the reported wasm result with the provided filter, then compare the referenced baseline and test commits to determine what changed. Done means the improvement is explained and any needed follow-up is documented.

Written by the indexing model from the issue text.