[Perf] Linux/x64: 3 Improvements on 8/28/2026 6:27:02 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b](https://github.com/dotnet/runtime/commit/57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b)
Compare | [d2ea726dd3d8faad797755c9fbb1ff15226e25f0](https://github.com/dotnet/runtime/commit/d2ea726dd3d8faad797755c9fbb1ff15226e25f0)
Diff | [Diff](https://github.com/dotnet/runtime/compare/57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b...d2ea726dd3d8faad797755c9fbb1ff15226e25f0)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Linq.Tests.Perf_Enumerable

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

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

| 462.38 μs | 245.27 μs | 0.53 | 0.28 | False | | |
|

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

| 3.20 μs | 2.86 μs | 0.89 | 0.23 | 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.Linq.Tests.Perf_Enumerable*'
```

### System.Linq.Tests.Perf_Enumerable.CastToBaseClass(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.SequenceEqual(input1: Array, input2: Array)

#### 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 | [57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b](https://github.com/dotnet/runtime/commit/57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b)
Compare | [d2ea726dd3d8faad797755c9fbb1ff15226e25f0](https://github.com/dotnet/runtime/commit/d2ea726dd3d8faad797755c9fbb1ff15226e25f0)
Diff | [Diff](https://github.com/dotnet/runtime/compare/57c9c3fdcbc94ad98f0a4b8abedb7c6eadfb264b...d2ea726dd3d8faad797755c9fbb1ff15226e25f0)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements 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]()

| 10.55 μs | 9.47 μs | 0.90 | 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.ComponentModel.Tests.Perf_TypeDescriptorTests*'
```

### 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)

Start with the benchmark sources in performance/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs and performance/src/benchmarks/micro/libraries/System.ComponentModel.TypeConverter/Perf.TypeDescriptorTests.cs. Run the provided benchmarks_ci.py filters, compare the linked reports and commits, and determine whether the measured improvements represent a runtime change that needs follow-up; done means the findings are explained and any required issue or fix is identified.

Written by the indexing model from the issue text.