[Perf] Windows/x64: 4 Regressions on 7/3/2026 10:18:16 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [e1979b72ccb5f916649f1d9949ef663254790c25](https://github.com/dotnet/runtime/commit/e1979b72ccb5f916649f1d9949ef663254790c25)
Compare | [6814be7e81ea875d36976bea750ba5f8325ac58b](https://github.com/dotnet/runtime/commit/6814be7e81ea875d36976bea750ba5f8325ac58b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e1979b72ccb5f916649f1d9949ef663254790c25...6814be7e81ea875d36976bea750ba5f8325ac58b)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Formats.Tar.Tests.Perf_TarFile

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

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

| 335.81 μs | 564.85 μs | 1.68 | 0.74 | False | | |
|

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

| 413.21 μs | 685.29 μs | 1.66 | 0.69 | False | | |
|

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

| 417.52 μs | 633.31 μs | 1.52 | 0.69 | False | | |
|

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

| 417.37 μs | 604.00 μs | 1.45 | 0.75 | False | | |

![graph]()
![graph]()
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[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.Formats.Tar.Tests.Perf_TarFile*'
```

### System.Formats.Tar.Tests.Perf_TarFile.ExtractToDirectory_Path

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Formats.Tar.Tests.Perf_TarFile.ExtractToDirectory_Stream

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Formats.Tar.Tests.Perf_TarFile.ExtractToDirectory_Path_Async

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Formats.Tar.Tests.Perf_TarFile.ExtractToDirectory_Stream_Async

#### 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)