[Perf] Linux/arm64: 1 Improvement on 9/1/2026 5:15:28 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [bdcba57531224815fbbc0fbb5ee23a1d3876d43a](https://github.com/dotnet/runtime/commit/bdcba57531224815fbbc0fbb5ee23a1d3876d43a)
Compare | [5ea788a76b90b3ce533ec04750817dc703e69208](https://github.com/dotnet/runtime/commit/5ea788a76b90b3ce533ec04750817dc703e69208)
Diff | [Diff](https://github.com/dotnet/runtime/compare/bdcba57531224815fbbc0fbb5ee23a1d3876d43a...5ea788a76b90b3ce533ec04750817dc703e69208)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.LowLevelPerf

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

• [InterfaceInterfaceMethodSwitchCallType - 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 'PerfLabTests.LowLevelPerf*'
```

### PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodSwitchCallType

#### 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 PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodSwitchCallType benchmark in performance/src/benchmarks/micro/runtime/perflab/LowLevelPerf.cs, lines 157-168, and review the linked baseline, comparison, and test reports. Run the provided benchmarks_ci.py command and determine what change is expected; done means the relevant arm64 Ubuntu benchmark result is validated against the reported improvement.

Written by the indexing model from the issue text.