[Perf] Windows/x64: 2 Improvements on 2/3/2026 2:30:42 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [918254d67350876df8f9e474195ef359a7ce33f6](https://github.com/dotnet/runtime/commit/918254d67350876df8f9e474195ef359a7ce33f6)
Compare | [39580bd95b3a75f6a304f05d2117ae72ec0c53a3](https://github.com/dotnet/runtime/commit/39580bd95b3a75f6a304f05d2117ae72ec0c53a3)
Diff | [Diff](https://github.com/dotnet/runtime/compare/918254d67350876df8f9e474195ef359a7ce33f6...39580bd95b3a75f6a304f05d2117ae72ec0c53a3)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Text.Json.Document.Tests.Perf_EnumerateArray

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

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

| 5.05 μs | 4.72 μs | 0.93 | 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.Text.Json.Document.Tests.Perf_EnumerateArray*'
```

### System.Text.Json.Document.Tests.Perf_EnumerateArray.Parse(TestCase: ArrayOfNumbers)

#### 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 | [918254d67350876df8f9e474195ef359a7ce33f6](https://github.com/dotnet/runtime/commit/918254d67350876df8f9e474195ef359a7ce33f6)
Compare | [39580bd95b3a75f6a304f05d2117ae72ec0c53a3](https://github.com/dotnet/runtime/commit/39580bd95b3a75f6a304f05d2117ae72ec0c53a3)
Diff | [Diff](https://github.com/dotnet/runtime/compare/918254d67350876df8f9e474195ef359a7ce33f6...39580bd95b3a75f6a304f05d2117ae72ec0c53a3)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Text.Json.Tests.Perf_Reader

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

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

| 1.10 μs | 1.03 μs | 0.94 | 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 'System.Text.Json.Tests.Perf_Reader*'
```

### System.Text.Json.Tests.Perf_Reader.ReadSingleSpanSequenceEmptyLoop(IsDataCompact: True, TestCase: LotsOfNumbers)

#### 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)

Bắt đầu với các mã nguồn benchmark tại src/benchmarks/micro/libraries/System.Text.Json/Document/EnumerateArray.cs và src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonReader/Perf.Reader.cs. Chạy các bộ lọc benchmarks_ci.py được cung cấp và xem xét các báo cáo được liên kết cùng baseline/compare commits để xác định liệu những cải thiện được báo cáo có cần theo dõi tiếp hay không; hoàn tất có nghĩa là kết quả hiệu năng đã được triage với một kết luận được ghi lại.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.