[Perf] Linux/x64: 3 Regressions on 3/31/2026 12:04:47 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
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
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [Contact4Nonconvex - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 484.27 μs | 558.54 μs | 1.15 | 0.00 | True | | |
|

• [Contact4 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 288.23 μs | 365.63 μs | 1.27 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.Contact4Nonconvex

#### ETL Files

#### Histogram

#### JIT Disasms

### DemoBenchmarks.TwoBodyConstraintBenchmarks.Contact4

#### 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 | [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.GroupedCollisionTesterBenchmarks

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

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

| 20.55 μs | 28.40 μs | 1.38 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'DemoBenchmarks.GroupedCollisionTesterBenchmarks*'
```

### DemoBenchmarks.GroupedCollisionTesterBenchmarks.CheapCollisionBenchmarks

#### 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)