[Perf] Linux/arm64: 3 Improvements on 7/6/2026 5:00:29 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [ff279bafa8ca2fbf920b605868e9b0a2c0497034](https://github.com/dotnet/runtime/commit/ff279bafa8ca2fbf920b605868e9b0a2c0497034)
Compare | [079b4572b83e3b66031899e6bf3842e1b4da7231](https://github.com/dotnet/runtime/commit/079b4572b83e3b66031899e6bf3842e1b4da7231)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ff279bafa8ca2fbf920b605868e9b0a2c0497034...079b4572b83e3b66031899e6bf3842e1b4da7231)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_Matrix4x4

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

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

| 10.72 ns | 7.26 ns | 0.68 | 0.01 | False | | |
|

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

| 40.68 ns | 32.33 ns | 0.79 | 0.01 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_Matrix4x4*'
```

### System.Numerics.Tests.Perf_Matrix4x4.GetDeterminantBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_Matrix4x4.InvertBenchmark

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [ff279bafa8ca2fbf920b605868e9b0a2c0497034](https://github.com/dotnet/runtime/commit/ff279bafa8ca2fbf920b605868e9b0a2c0497034)
Compare | [079b4572b83e3b66031899e6bf3842e1b4da7231](https://github.com/dotnet/runtime/commit/079b4572b83e3b66031899e6bf3842e1b4da7231)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ff279bafa8ca2fbf920b605868e9b0a2c0497034...079b4572b83e3b66031899e6bf3842e1b4da7231)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_Plane

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

• [TransformByMatrix4x4Benchmark - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 44.54 ns | 37.79 ns | 0.85 | 0.01 | False | | |

![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 'System.Numerics.Tests.Perf_Plane*'
```

### System.Numerics.Tests.Perf_Plane.TransformByMatrix4x4Benchmark

#### 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_Matrix4x4.cs and Perf_Plane.cs, then run the benchmark commands in the Repro sections on the stated arm64 Ubuntu configuration. Compare the generated results with the linked reports and determine whether the reported improvements represent an actionable runtime issue; the issue does not define a concrete change or completion test.

Written by the indexing model from the issue text.