[Perf] Linux/x64: 3 Regressions on 5/27/2026 3:06:56 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [c57d5a14ae356880b4bd34d16814f3745111011f](https://github.com/dotnet/runtime/commit/c57d5a14ae356880b4bd34d16814f3745111011f)
Compare | [d78013e4cb65077b47ed973db979946417a92930](https://github.com/dotnet/runtime/commit/d78013e4cb65077b47ed973db979946417a92930)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c57d5a14ae356880b4bd34d16814f3745111011f...d78013e4cb65077b47ed973db979946417a92930)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Threading.Tests.Perf_Interlocked

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

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

| 0.94 ns | 300.00 ns | 317.70 | 0.43 | False | | |

![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 'System.Threading.Tests.Perf_Interlocked*'
```

### System.Threading.Tests.Perf_Interlocked.Increment_int

#### 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 | [c57d5a14ae356880b4bd34d16814f3745111011f](https://github.com/dotnet/runtime/commit/c57d5a14ae356880b4bd34d16814f3745111011f)
Compare | [d78013e4cb65077b47ed973db979946417a92930](https://github.com/dotnet/runtime/commit/d78013e4cb65077b47ed973db979946417a92930)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c57d5a14ae356880b4bd34d16814f3745111011f...d78013e4cb65077b47ed973db979946417a92930)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Memory.Span<Int32>

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

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

| 7.70 ns | 225.00 ns | 29.23 | 0.46 | False | | |

![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 'System.Memory.Span*'
```

### System.Memory.Span<Int32>.Clear(Size: 33)

#### 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 | [c57d5a14ae356880b4bd34d16814f3745111011f](https://github.com/dotnet/runtime/commit/c57d5a14ae356880b4bd34d16814f3745111011f)
Compare | [d78013e4cb65077b47ed973db979946417a92930](https://github.com/dotnet/runtime/commit/d78013e4cb65077b47ed973db979946417a92930)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c57d5a14ae356880b4bd34d16814f3745111011f...d78013e4cb65077b47ed973db979946417a92930)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_VectorOf<UInt16>

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

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

| 1.42 ns | 175.00 ns | 123.17 | 0.41 | False | | |

![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 'System.Numerics.Tests.Perf_VectorOf*'
```

### System.Numerics.Tests.Perf_VectorOf<UInt16>.OnesComplementOperatorBenchmark

#### 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)