[Perf] Linux/x64: 1 Improvement on 9/1/2026 12:38:34 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
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:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in PerfLabTests.BlockCopyPerf

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

• [CallBlockCopy - 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.BlockCopyPerf*'
```

### PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements: 10)

#### 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/micro/runtime/perflab/BlockCopyPerf.cs and the benchmarking workflow linked in the issue, then run the provided benchmarks_ci.py command for PerfLabTests.BlockCopyPerf. Compare the linked baseline, test, and report data; the issue provides no acceptance criterion beyond investigating the reported performance result.

Written by the indexing model from the issue text.