[Perf] Linux/x64: 2 Improvements on 5/7/2026 1:08:18 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
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:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Diagnostics.Perf_Activity

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

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

| 1.80 μs | 1.36 μs | 0.76 | 0.25 | False | | |
|

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

| 1.45 μs | 1.27 μs | 0.88 | 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.Diagnostics.Perf_Activity*'
```

### System.Diagnostics.Perf_Activity.EnumerateActivityLinksSmall

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Diagnostics.Perf_Activity.EnumerateActivityEventsSmall

#### 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)