[Perf] Linux/x64: 2 Regressions on 7/13/2026 9:16:34 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [4a6c691f97cd93b08ef0794d297de622e4409e66](https://github.com/dotnet/sdk/commit/4a6c691f97cd93b08ef0794d297de622e4409e66)
Compare | [50dbab4de210e882172b07934e9666313b7065f1](https://github.com/dotnet/sdk/commit/50dbab4de210e882172b07934e9666313b7065f1)
Diff | [Diff](https://github.com/dotnet/sdk/compare/4a6c691f97cd93b08ef0794d297de622e4409e66...50dbab4de210e882172b07934e9666313b7065f1)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.OneBodyConstraintBenchmarks

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

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

| 37.63 μs | 49.32 μs | 1.31 | 0.00 | True | | |

![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 'DemoBenchmarks.OneBodyConstraintBenchmarks*'
```

### DemoBenchmarks.OneBodyConstraintBenchmarks.OneBodyLinearMotor

#### 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 | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [4a6c691f97cd93b08ef0794d297de622e4409e66](https://github.com/dotnet/sdk/commit/4a6c691f97cd93b08ef0794d297de622e4409e66)
Compare | [50dbab4de210e882172b07934e9666313b7065f1](https://github.com/dotnet/sdk/commit/50dbab4de210e882172b07934e9666313b7065f1)
Diff | [Diff](https://github.com/dotnet/sdk/compare/4a6c691f97cd93b08ef0794d297de622e4409e66...50dbab4de210e882172b07934e9666313b7065f1)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.GroupedCollisionTesterBenchmarks

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

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

| 231.45 μs | 255.23 μs | 1.10 | 0.00 | True | | |

![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 'DemoBenchmarks.GroupedCollisionTesterBenchmarks*'
```

### DemoBenchmarks.GroupedCollisionTesterBenchmarks.ModerateCostCollisionBenchmarks

#### 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 the benchmark sources linked in the issue: src/benchmarks/real-world/bepuphysics2/OneBodyConstraintBenchmarks.cs and GroupedCollisionTesterBenchmarks.cs. Run the provided benchmarks_ci.py filters, then compare the reported baseline and test results and use the linked reports for profiling details. Done means the regression is explained and any fix is validated by rerunning both benchmarks.

Written by the indexing model from the issue text.