[Perf] Linux/x64: 2 Regressions on 8/10/2026 9:32:19 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4](https://github.com/dotnet/sdk/commit/8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4)
Compare | [7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99](https://github.com/dotnet/sdk/commit/7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99)
Diff | [Diff](https://github.com/dotnet/sdk/compare/8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4...7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

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

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

| 45.45 μs | 62.87 μs | 1.38 | 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.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.AngularSwivelHinge

#### 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 | [8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4](https://github.com/dotnet/sdk/commit/8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4)
Compare | [7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99](https://github.com/dotnet/sdk/commit/7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99)
Diff | [Diff](https://github.com/dotnet/sdk/compare/8a6d49a3ce3bd6d5fcbac911e446b9cce5767ae4...7fb8cef14d9ae6bd729b04638f88d00f1ba7eb99)
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]()

| 71.60 μs | 82.77 μs | 1.16 | 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.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 the provided benchmarks_ci.py command for DemoBenchmarks.TwoBodyConstraintBenchmarks and DemoBenchmarks.FourBodyConstraintBenchmarks. Read the benchmark sources at src/benchmarks/real-world/bepuphysics2/TwoBodyConstraintBenchmarks.cs and FourBodyConstraintBenchmarks.cs, then compare the listed baseline and compare commits. Done means the two Linux/x64 regressions are explained and a validated correction or triage outcome is recorded.

Written by the indexing model from the issue text.