[Perf] Linux/x64: 5 Regressions on 8/17/2026 8:39:59 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [92ad645e7aed3c448d577f9b880454ac1cd79fa8](https://github.com/dotnet/runtime/commit/92ad645e7aed3c448d577f9b880454ac1cd79fa8)
Compare | [2eebfbf193bc0be8b44f65c9f94d536cf1c3e699](https://github.com/dotnet/runtime/commit/2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Diff | [Diff](https://github.com/dotnet/runtime/compare/92ad645e7aed3c448d577f9b880454ac1cd79fa8...2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.ComponentModel.Tests.Perf_TypeDescriptorTests

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

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

| 7.43 μs | 10.94 μs | 1.47 | 0.16 | False | | |
|

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

| 10.03 μs | 12.72 μs | 1.27 | 0.14 | False | | |

![graph]()
![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.ComponentModel.Tests.Perf_TypeDescriptorTests*'
```

### System.ComponentModel.Tests.Perf_TypeDescriptorTests.GetConverter(typeToConvert: typeof(string))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.ComponentModel.Tests.Perf_TypeDescriptorTests.GetConverter(typeToConvert: typeof(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 | [92ad645e7aed3c448d577f9b880454ac1cd79fa8](https://github.com/dotnet/runtime/commit/92ad645e7aed3c448d577f9b880454ac1cd79fa8)
Compare | [2eebfbf193bc0be8b44f65c9f94d536cf1c3e699](https://github.com/dotnet/runtime/commit/2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Diff | [Diff](https://github.com/dotnet/runtime/compare/92ad645e7aed3c448d577f9b880454ac1cd79fa8...2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

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

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

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

| 162.55 μs | 228.01 μs | 1.40 | 0.28 | False | | |
|

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

| 3.66 ms | 4.92 ms | 1.35 | 0.29 | False | | |

![graph]()
![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<String, String>.HeapSort(Size: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_PriorityQueue<String, String>.HeapSort(Size: 100)

#### 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 | [92ad645e7aed3c448d577f9b880454ac1cd79fa8](https://github.com/dotnet/runtime/commit/92ad645e7aed3c448d577f9b880454ac1cd79fa8)
Compare | [2eebfbf193bc0be8b44f65c9f94d536cf1c3e699](https://github.com/dotnet/runtime/commit/2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Diff | [Diff](https://github.com/dotnet/runtime/compare/92ad645e7aed3c448d577f9b880454ac1cd79fa8...2eebfbf193bc0be8b44f65c9f94d536cf1c3e699)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Tests.Perf_Enum

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

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

| 7.65 μs | 8.56 μs | 1.12 | 0.17 | 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_Enum*'
```

### System.Tests.Perf_Enum.Parse_Flags(text: "Red")

#### 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 documented benchmarks_ci.py command with the listed filters, then compare the baseline and compare commits in the regression reports. Start with the mentioned benchmark sources, Perf.TypeDescriptorTests.cs and Perf_PriorityQueue.cs, and inspect the linked test reports. Done means the reported regressions are explained and the affected benchmarks no longer regress against the baseline.

Written by the indexing model from the issue text.