[Perf] Linux/x64: 3 Regressions on 3/10/2026 8:09:51 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [68de53c1ec0e6cc230dc8da5a54e11e03edbd37c](https://github.com/dotnet/runtime/commit/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c)
Compare | [1e1bbed9856fd11f562d5e5b23b43b938e23f437](https://github.com/dotnet/runtime/commit/1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Diff | [Diff](https://github.com/dotnet/runtime/compare/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c...1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Tests.Perf_Int128

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

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

| 199.09 ns | 249.39 ns | 1.25 | 0.05 | 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.Tests.Perf_Int128*'
```

### System.Tests.Perf_Int128.ParseSpan(value: "12345")

#### 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 | [68de53c1ec0e6cc230dc8da5a54e11e03edbd37c](https://github.com/dotnet/runtime/commit/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c)
Compare | [1e1bbed9856fd11f562d5e5b23b43b938e23f437](https://github.com/dotnet/runtime/commit/1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Diff | [Diff](https://github.com/dotnet/runtime/compare/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c...1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Memory.ReadOnlySequence

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

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

| 65.28 ns | 96.24 ns | 1.47 | 0.12 | 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.ReadOnlySequence*'
```

### System.Memory.ReadOnlySequence.Slice_Start_And_Length(Segment: Multiple)

#### 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 | [68de53c1ec0e6cc230dc8da5a54e11e03edbd37c](https://github.com/dotnet/runtime/commit/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c)
Compare | [1e1bbed9856fd11f562d5e5b23b43b938e23f437](https://github.com/dotnet/runtime/commit/1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Diff | [Diff](https://github.com/dotnet/runtime/compare/68de53c1ec0e6cc230dc8da5a54e11e03edbd37c...1e1bbed9856fd11f562d5e5b23b43b938e23f437)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Collections.Tests.Perf_PriorityQueue<Guid, Guid>

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

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

| 123.72 μs | 132.48 μs | 1.07 | 0.14 | 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.Collections.Tests.Perf_PriorityQueue*'
```

### System.Collections.Tests.Perf_PriorityQueue<Guid, Guid>.K_Max_Elements(Size: 1000)

#### 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)