[Perf] Linux/arm64: 2 Improvements on 3/22/2026 11:21:21 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f416dc4f97c836c6b91617e9c1857a752072b5e2](https://github.com/dotnet/runtime/commit/f416dc4f97c836c6b91617e9c1857a752072b5e2)
Compare | [7c58a24f0cb5c1201be893387fe993be25f66263](https://github.com/dotnet/runtime/commit/7c58a24f0cb5c1201be893387fe993be25f66263)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f416dc4f97c836c6b91617e9c1857a752072b5e2...7c58a24f0cb5c1201be893387fe993be25f66263)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.ContainsTrue<Int32>

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

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

| 3.45 μs | 2.86 μs | 0.83 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsTrue*'
```

### System.Collections.ContainsTrue<Int32>.HashSet(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)

---

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f416dc4f97c836c6b91617e9c1857a752072b5e2](https://github.com/dotnet/runtime/commit/f416dc4f97c836c6b91617e9c1857a752072b5e2)
Compare | [7c58a24f0cb5c1201be893387fe993be25f66263](https://github.com/dotnet/runtime/commit/7c58a24f0cb5c1201be893387fe993be25f66263)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f416dc4f97c836c6b91617e9c1857a752072b5e2...7c58a24f0cb5c1201be893387fe993be25f66263)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.ContainsTrueComparer<Int32>

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

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

| 7.23 μs | 3.37 μs | 0.47 | 0.19 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsTrueComparer*'
```

### System.Collections.ContainsTrueComparer<Int32>.HashSet(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)