[Perf] Windows/x64: 2 Improvements on 5/28/2026 9:53:58 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [2a546738e968e3f75092657d4bee6bd21821e069](https://github.com/dotnet/runtime/commit/2a546738e968e3f75092657d4bee6bd21821e069)
Compare | [df1507806b4e2cd19bde86e5a945bd4bfd7839f5](https://github.com/dotnet/runtime/commit/df1507806b4e2cd19bde86e5a945bd4bfd7839f5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2a546738e968e3f75092657d4bee6bd21821e069...df1507806b4e2cd19bde86e5a945bd4bfd7839f5)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.CastingPerf2.CastingPerf

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

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

| 758.76 μs | 704.49 μs | 0.93 | 0.04 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.CastingPerf2.CastingPerf*'
```

### PerfLabTests.CastingPerf2.CastingPerf.ObjrefValueTypeObj

#### 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 | Windows 10.0.22631
Queue | ViperWindows
Baseline | [2a546738e968e3f75092657d4bee6bd21821e069](https://github.com/dotnet/runtime/commit/2a546738e968e3f75092657d4bee6bd21821e069)
Compare | [df1507806b4e2cd19bde86e5a945bd4bfd7839f5](https://github.com/dotnet/runtime/commit/df1507806b4e2cd19bde86e5a945bd4bfd7839f5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2a546738e968e3f75092657d4bee6bd21821e069...df1507806b4e2cd19bde86e5a945bd4bfd7839f5)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.CreateAddAndRemove<String>

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

• [OrderedDictionary - Duration of single invocation]()
• [ADX - Test Multi Config Graph]()

| 955.70 μs | 730.28 μs | 0.76 | 0.01 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CreateAddAndRemove*'
```

### System.Collections.CreateAddAndRemove<String>.OrderedDictionary(Size: 512)

#### 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)