[Perf] Windows/x86: 2 Improvements on 9/1/2026 12:38:34 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [bdcba57531224815fbbc0fbb5ee23a1d3876d43a](https://github.com/dotnet/runtime/commit/bdcba57531224815fbbc0fbb5ee23a1d3876d43a)
Compare | [f00a5ba2dde9f648bcd9ac77411d1a8596449303](https://github.com/dotnet/runtime/commit/f00a5ba2dde9f648bcd9ac77411d1a8596449303)
Diff | [Diff](https://github.com/dotnet/runtime/compare/bdcba57531224815fbbc0fbb5ee23a1d3876d43a...f00a5ba2dde9f648bcd9ac77411d1a8596449303)
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]()

| 812.92 μs | 569.00 μs | 0.70 | 0.44 | False | | |
|

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

| 2.52 ms | 2.25 ms | 0.89 | 0.39 | False | | |

![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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.LowLevelPerf*'
```

### PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodSwitchCallType

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.LowLevelPerf.InterfaceInterfaceMethod

#### 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 in performance/src/benchmarks/micro/runtime/perflab/LowLevelPerf.cs at lines 96-114 and 157-168, then run the provided benchmarks_ci.py command. Compare the Windows/x86 reports and the linked baseline and compare commits. The issue does not define a code change or explicit completion criteria, so confirm the intended follow-up during triage.

Written by the indexing model from the issue text.