dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 7 Improvements on 7/8/2026 8:49:11 AM +00:00

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arch-x64 branch-refs/heads/main compilationmode-tiered kind-micro os-windows perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9](https://github.com/dotnet/runtime/commit/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9)
Compare | [07f0abcdaf13e1361330564cf18622dbc98d26ba](https://github.com/dotnet/runtime/commit/07f0abcdaf13e1361330564cf18622dbc98d26ba)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9...07f0abcdaf13e1361330564cf18622dbc98d26ba)
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
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [InvertBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.71 ns | 1.62 ns | 0.60 | 0.01 | False | | |
|
  • [MultiplyByMatrixOperatorBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.52 ns | 2.17 ns | 0.62 | 0.01 | False | | |
|
  • [MultiplyByMatrixBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.52 ns | 2.17 ns | 0.62 | 0.01 | False | | |

![graph]()
![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.InvertBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

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

#### ETL Files

#### Histogram

#### JIT Disasms

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

#### 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 | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9](https://github.com/dotnet/runtime/commit/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9)
Compare | [3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc](https://github.com/dotnet/runtime/commit/3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9...3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc)
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
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [TransformBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 23.08 ns | 2.17 ns | 0.09 | 0.10 | False | | |
|
  • [GetDeterminantBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 5.69 ns | 3.06 ns | 0.54 | 0.07 | False | | |
|
  • [CreateConstrainedBillboardBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 11.64 ns | 9.47 ns | 0.81 | 0.00 | False | | |

![graph]()
![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_Matrix4x4*'
```

### System.Numerics.Tests.Perf_Matrix4x4.TransformBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

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

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_Matrix4x4.CreateConstrainedBillboardBenchmark

#### 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 | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9](https://github.com/dotnet/runtime/commit/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9)
Compare | [3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc](https://github.com/dotnet/runtime/commit/3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c76054f5cb1aae6ab146ec7a8db70ca3aeda4ac9...3ade0b55c797a31f6800040e3ae3c5c75bc0d2dc)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_Quaternion

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

  • [CreateFromRotationMatrixBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.75 ns | 1.63 ns | 0.43 | 0.05 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_Quaternion*'
```

### System.Numerics.Tests.Perf_Quaternion.CreateFromRotationMatrixBenchmark

#### 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)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the linked benchmark sources in src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_Matrix3x2.cs and Perf_Matrix4x4.cs, then review the Windows/x64 test report and baseline comparisons. Run the provided benchmarks_ci.py command and compare the reported results; done means establishing whether these automated improvements indicate an actionable runtime change.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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