[Perf] Linux/arm64: 2 Improvements on 7/8/2026 3:24:30 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | azurelinux 3.0
Queue | CobaltAzureLinux
Baseline | [f475c19ddfd8b94cd311712cb799c4be14bd6d31](https://github.com/dotnet/runtime/commit/f475c19ddfd8b94cd311712cb799c4be14bd6d31)
Compare | [f9a6e2ef41c17130866d7036c5f0cde47e8854af](https://github.com/dotnet/runtime/commit/f9a6e2ef41c17130866d7036c5f0cde47e8854af)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f475c19ddfd8b94cd311712cb799c4be14bd6d31...f9a6e2ef41c17130866d7036c5f0cde47e8854af)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_Matrix3x2

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

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

| 9.77 ns | 2.71 ns | 0.28 | 0.15 | False | | |
|

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

| 9.76 ns | 2.71 ns | 0.28 | 0.20 | 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 'System.Numerics.Tests.Perf_Matrix3x2*'
```

### System.Numerics.Tests.Perf_Matrix3x2.MultiplyByMatrixBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_Matrix3x2.MultiplyByMatrixOperatorBenchmark

#### 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/libraries/System.Numerics.Vectors/Perf_Matrix3x2.cs at the two benchmark locations linked in the report. Run the provided benchmarks_ci.py command and compare the arm64 Azure Linux results with the linked history and test report. Done means confirming the improvement and identifying a concrete, actionable follow-up.

Written by the indexing model from the issue text.