dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 3 Regressions on 6/29/2026 8:56:23 AM +00:00

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arch-x64 branch-11.0 compilationmode-tiered kind-bepuphysics Noise os-windows perf-regression runkind-bepuphysics runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [b97dd2f4b6aec05e98c71ec9830fa19de920af8b](https://github.com/dotnet/sdk/commit/b97dd2f4b6aec05e98c71ec9830fa19de920af8b)
Compare | [7c528f6e19c5245206de3dc561eb8a110bf9f746](https://github.com/dotnet/sdk/commit/7c528f6e19c5245206de3dc561eb8a110bf9f746)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b97dd2f4b6aec05e98c71ec9830fa19de920af8b...7c528f6e19c5245206de3dc561eb8a110bf9f746)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

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

  • [DistanceServo - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 82.80 μs | 103.95 μs | 1.26 | 0.00 | True | | |
|
  • [BallSocket - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 68.54 μs | 80.09 μs | 1.17 | 0.00 | True | | |
|
  • [AngularHinge - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 100.60 μs | 115.18 μs | 1.14 | 0.00 | True | | |

![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 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.DistanceServo

#### ETL Files

#### Histogram

#### JIT Disasms

### DemoBenchmarks.TwoBodyConstraintBenchmarks.BallSocket

#### ETL Files

#### Histogram

#### JIT Disasms

### DemoBenchmarks.TwoBodyConstraintBenchmarks.AngularHinge

#### 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 source at src/benchmarks/real-world/bepuphysics2/TwoBodyConstraintBenchmarks.cs and compare the listed baseline and test commits. Run scripts/benchmarks_ci.py with the provided filter, then investigate the three reported regressions; done means the DistanceServo, BallSocket, and AngularHinge benchmarks no longer regress under the reported Windows/x64 configuration.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
performance, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
42/100

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