[Perf] Linux/x64: 1 Improvement on 4/4/2026 8:49:40 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d70206844a95b337601237466bfc6cbb7d52d6d4](https://github.com/dotnet/sdk/commit/d70206844a95b337601237466bfc6cbb7d52d6d4)
Compare | [0d6cc667e66d7bec23439335118137f78c70306c](https://github.com/dotnet/sdk/commit/0d6cc667e66d7bec23439335118137f78c70306c)
Diff | [Diff](https://github.com/dotnet/sdk/compare/d70206844a95b337601237466bfc6cbb7d52d6d4...0d6cc667e66d7bec23439335118137f78c70306c)
Configs | CompilationMode:tiered, RunKind:akadeindexedset

### Improvements in Akade.IndexedSet.Benchmarks.PrefixIndexBenchmarks

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

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

| 642.28 ns | 499.78 ns | 0.78 | 0.00 | True | | |

[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 'Akade.IndexedSet.Benchmarks.PrefixIndexBenchmarks*'
```

### Akade.IndexedSet.Benchmarks.PrefixIndexBenchmarks.StartsWith_IndexedSet

#### 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 src/benchmarks/real-world/Akade.IndexedSet.Benchmarks/PrefixIndexBenchmarks.cs and the benchmarking workflow linked in the issue. Run the provided benchmarks_ci.py command with the PrefixIndexBenchmarks filter, then compare the reported StartsWith_IndexedSet result against the baseline. Done means confirming whether the measured improvement is valid and documenting the follow-up.

Written by the indexing model from the issue text.