[Perf] Linux/arm64: 4 Improvements on 1/24/2026 4:18:23 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [2cd0cc89e2bdbcaa804c93a36adefa055d851c40](https://github.com/dotnet/runtime/commit/2cd0cc89e2bdbcaa804c93a36adefa055d851c40)
Compare | [8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b](https://github.com/dotnet/runtime/commit/8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2cd0cc89e2bdbcaa804c93a36adefa055d851c40...8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.GetMember

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

• [GetMethod20 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 1.84 ms | 1.61 ms | 0.87 | 0.21 | False | | |
|

• [GetMethod5 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 382.06 μs | 291.31 μs | 0.76 | 0.21 | False | | |
|

• [GetMethod4 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 296.47 μs | 225.59 μs | 0.76 | 0.27 | False | | |

![graph]()
![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 'PerfLabTests.GetMember*'
```

### PerfLabTests.GetMember.GetMethod20

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.GetMember.GetMethod5

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.GetMember.GetMethod4

#### 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 | [2cd0cc89e2bdbcaa804c93a36adefa055d851c40](https://github.com/dotnet/runtime/commit/2cd0cc89e2bdbcaa804c93a36adefa055d851c40)
Compare | [8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b](https://github.com/dotnet/runtime/commit/8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2cd0cc89e2bdbcaa804c93a36adefa055d851c40...8fafcb3251a3d2ccde36612a2eab47e9ae8ebe2b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Tests.Perf_Object

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

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

| 5.98 ns | 3.57 ns | 0.60 | 0.58 | 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.Tests.Perf_Object*'
```

### System.Tests.Perf_Object.ctor

#### 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)