dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 3 Regressions on 3/31/2026 12:04:50 PM +00:00

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arch-x64 branch-11.0 kind-bepuphysics os-windows perf-regression runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [df311e561f7f53880dfaa4b12df0eb75da8a7bce](https://github.com/dotnet/sdk/commit/df311e561f7f53880dfaa4b12df0eb75da8a7bce)
Compare | [d70206844a95b337601237466bfc6cbb7d52d6d4](https://github.com/dotnet/sdk/commit/d70206844a95b337601237466bfc6cbb7d52d6d4)
Diff | [Diff](https://github.com/dotnet/sdk/compare/df311e561f7f53880dfaa4b12df0eb75da8a7bce...d70206844a95b337601237466bfc6cbb7d52d6d4)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.SweepBenchmarks

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

  • [CapsuleCylinder - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 5.43 μs | 6.13 μs | 1.13 | 0.00 | True | | |

[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 'DemoBenchmarks.SweepBenchmarks*'
```

### DemoBenchmarks.SweepBenchmarks.CapsuleCylinder

#### 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 | [df311e561f7f53880dfaa4b12df0eb75da8a7bce](https://github.com/dotnet/sdk/commit/df311e561f7f53880dfaa4b12df0eb75da8a7bce)
Compare | [d70206844a95b337601237466bfc6cbb7d52d6d4](https://github.com/dotnet/sdk/commit/d70206844a95b337601237466bfc6cbb7d52d6d4)
Diff | [Diff](https://github.com/dotnet/sdk/compare/df311e561f7f53880dfaa4b12df0eb75da8a7bce...d70206844a95b337601237466bfc6cbb7d52d6d4)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.FourBodyConstraintBenchmarks

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

  • [VolumeConstraint - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 79.43 μs | 93.00 μs | 1.17 | 0.00 | True | | |

[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 'DemoBenchmarks.FourBodyConstraintBenchmarks*'
```

### DemoBenchmarks.FourBodyConstraintBenchmarks.VolumeConstraint

#### 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 | [df311e561f7f53880dfaa4b12df0eb75da8a7bce](https://github.com/dotnet/sdk/commit/df311e561f7f53880dfaa4b12df0eb75da8a7bce)
Compare | [d70206844a95b337601237466bfc6cbb7d52d6d4](https://github.com/dotnet/sdk/commit/d70206844a95b337601237466bfc6cbb7d52d6d4)
Diff | [Diff](https://github.com/dotnet/sdk/compare/df311e561f7f53880dfaa4b12df0eb75da8a7bce...d70206844a95b337601237466bfc6cbb7d52d6d4)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

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

  • [BallSocket - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 68.61 μs | 77.92 μs | 1.14 | 0.00 | True | | |

[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 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.BallSocket

#### 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 benchmark sources in src/benchmarks/real-world/bepuphysics2/SweepBenchmarks.cs, FourBodyConstraintBenchmarks.cs, and TwoBodyConstraintBenchmarks.cs, then run the listed benchmarks with the provided benchmarks_ci.py commands. Compare the reported regressions against the baseline and compare commits, and use the profiling workflow to identify the cause. Done means the regressions are explained and corrected, with benchmark results confirming the change.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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