[Perf] Linux/x64: 3 Regressions on 4/26/2026 8:54:15 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [ab01524bbb2ef1eea0ffaef161b3ef5686e8f256](https://github.com/dotnet/sdk/commit/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256)
Compare | [472c68a4fb23be92717d1714fb7a38bda7c4aac0](https://github.com/dotnet/sdk/commit/472c68a4fb23be92717d1714fb7a38bda7c4aac0)
Diff | [Diff](https://github.com/dotnet/sdk/compare/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256...472c68a4fb23be92717d1714fb7a38bda7c4aac0)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.GatherScatterBenchmarks

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

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

| 21.35 μs | 28.81 μs | 1.35 | 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.GatherScatterBenchmarks*'
```

### DemoBenchmarks.GatherScatterBenchmarks.GatherState

#### 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 | [ab01524bbb2ef1eea0ffaef161b3ef5686e8f256](https://github.com/dotnet/sdk/commit/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256)
Compare | [472c68a4fb23be92717d1714fb7a38bda7c4aac0](https://github.com/dotnet/sdk/commit/472c68a4fb23be92717d1714fb7a38bda7c4aac0)
Diff | [Diff](https://github.com/dotnet/sdk/compare/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256...472c68a4fb23be92717d1714fb7a38bda7c4aac0)
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]()

| 20.60 μs | 26.35 μs | 1.28 | 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.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)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [ab01524bbb2ef1eea0ffaef161b3ef5686e8f256](https://github.com/dotnet/sdk/commit/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256)
Compare | [472c68a4fb23be92717d1714fb7a38bda7c4aac0](https://github.com/dotnet/sdk/commit/472c68a4fb23be92717d1714fb7a38bda7c4aac0)
Diff | [Diff](https://github.com/dotnet/sdk/compare/ab01524bbb2ef1eea0ffaef161b3ef5686e8f256...472c68a4fb23be92717d1714fb7a38bda7c4aac0)
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]()

| 65.24 μs | 79.65 μs | 1.22 | 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.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)