[Perf] Linux/arm64: 5 Improvements on 2/11/2026 6:41:41 PM -08:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [d78c24c497f5ae9046d6f61f85d0066d8a159b60](https://github.com/dotnet/runtime/commit/d78c24c497f5ae9046d6f61f85d0066d8a159b60)
Compare | [6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e](https://github.com/dotnet/runtime/commit/6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d78c24c497f5ae9046d6f61f85d0066d8a159b60...6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e)
Configs | CompilationMode:tiered, RunKind:micro

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

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

• [GetUInt16 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 572.45 ns | 504.51 ns | 0.88 | 0.01 | False | | |
|

• [GetUInt64 - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 579.65 ns | 513.06 ns | 0.89 | 0.40 | False | | |
|

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

| 604.95 ns | 521.81 ns | 0.86 | 0.00 | False | | |
|

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

| 700.98 ns | 606.71 ns | 0.87 | 0.00 | False | | |

![graph]()
![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 'System.Text.Json.Tests.Perf_Get*'
```

### System.Text.Json.Tests.Perf_Get.GetUInt16

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Get.GetUInt64

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Get.GetByte

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Get.GetSByte

#### 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 | [d78c24c497f5ae9046d6f61f85d0066d8a159b60](https://github.com/dotnet/runtime/commit/d78c24c497f5ae9046d6f61f85d0066d8a159b60)
Compare | [6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e](https://github.com/dotnet/runtime/commit/6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d78c24c497f5ae9046d6f61f85d0066d8a159b60...6fbc0b6b2ba0795eeb7510a7b57ee7aaf31da38e)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.Sort<IntStruct>

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

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

| 19.00 μs | 16.90 μs | 0.89 | 0.50 | 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.Sort*'
```

### System.Collections.Sort<IntStruct>.LinqOrderByExtension(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)