[Perf] Windows/x64: 3 Improvements on 5/6/2026 8:26:59 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [2e33a3e335d509dda962bf1ca463d6c970b7393b](https://github.com/dotnet/runtime/commit/2e33a3e335d509dda962bf1ca463d6c970b7393b)
Compare | [06ca6751830996c1c815bfdd73a3fb4c8b53d77f](https://github.com/dotnet/runtime/commit/06ca6751830996c1c815bfdd73a3fb4c8b53d77f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2e33a3e335d509dda962bf1ca463d6c970b7393b...06ca6751830996c1c815bfdd73a3fb4c8b53d77f)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.IO.Tests.MemoryStreamChunkedTests

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

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

| 248.62 μs | 230.85 μs | 0.93 | 0.20 | False | | |
|

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

| 266.44 μs | 248.67 μs | 0.93 | 0.22 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Tests.MemoryStreamChunkedTests*'
```

### System.IO.Tests.MemoryStreamChunkedTests.ReadSpan(ChunkSize: 1)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.MemoryStreamChunkedTests.WriteSpan(ChunkSize: 1)

#### 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 | [055e04bbff528e950acfa0f5e56aa80c2e7929f7](https://github.com/dotnet/runtime/commit/055e04bbff528e950acfa0f5e56aa80c2e7929f7)
Compare | [cdbf0c2ba8a84fdc9d83f019baa2103a0afd580b](https://github.com/dotnet/runtime/commit/cdbf0c2ba8a84fdc9d83f019baa2103a0afd580b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/055e04bbff528e950acfa0f5e56aa80c2e7929f7...cdbf0c2ba8a84fdc9d83f019baa2103a0afd580b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Tests.Perf_Int32

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

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

| 26.33 ns | 15.13 ns | 0.57 | 0.21 | 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.Tests.Perf_Int32*'
```

### System.Tests.Perf_Int32.ToStringHex(value: 2147483647)

#### 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)