dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/arm64: 8 Improvements on 5/20/2026 9:51:13 AM +00:00

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ampere arch-arm64 bdn-update branch-refs/heads/main compilationmode-tiered kind-micro os-linux perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [c6a8e4caf07c58141038ca47aedc61ff39d33d96](https://github.com/dotnet/runtime/commit/c6a8e4caf07c58141038ca47aedc61ff39d33d96)
Compare | [47f05197c408d9a6f48622031d899e08dbd02264](https://github.com/dotnet/runtime/commit/47f05197c408d9a6f48622031d899e08dbd02264)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c6a8e4caf07c58141038ca47aedc61ff39d33d96...47f05197c408d9a6f48622031d899e08dbd02264)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Reflection.Invoke

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

  • [Field_Set_class - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 33.84 ns | 23.36 ns | 0.69 | 0.46 | False | | |
|
  • [Field_SetStatic_int - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 15.06 ns | 11.55 ns | 0.77 | 0.14 | False | | |
|
  • [Property_Get_int - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 18.82 ns | 16.06 ns | 0.85 | 0.12 | False | | |
|
  • [Field_Set_int - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 15.73 ns | 13.47 ns | 0.86 | 0.04 | False | | |
|
  • [Field_SetStatic_struct - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 67.69 ns | 61.19 ns | 0.90 | 0.07 | False | | |
|
  • [Field_Set_struct - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 57.11 ns | 51.86 ns | 0.91 | 0.17 | False | | |

![graph]()
![graph]()
![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.Reflection.Invoke*'
```

### System.Reflection.Invoke.Field_Set_class

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.Field_SetStatic_int

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.Property_Get_int

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.Field_Set_int

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.Field_SetStatic_struct

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.Field_Set_struct

#### 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 | [c6a8e4caf07c58141038ca47aedc61ff39d33d96](https://github.com/dotnet/runtime/commit/c6a8e4caf07c58141038ca47aedc61ff39d33d96)
Compare | [47f05197c408d9a6f48622031d899e08dbd02264](https://github.com/dotnet/runtime/commit/47f05197c408d9a6f48622031d899e08dbd02264)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c6a8e4caf07c58141038ca47aedc61ff39d33d96...47f05197c408d9a6f48622031d899e08dbd02264)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in IfStatements.IfStatements

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

  • [AndOr - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 85.36 μs | 76.88 μs | 0.90 | 0.15 | 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 'IfStatements.IfStatements*'
```

### IfStatements.IfStatements.AndOr

#### 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 | [c6a8e4caf07c58141038ca47aedc61ff39d33d96](https://github.com/dotnet/runtime/commit/c6a8e4caf07c58141038ca47aedc61ff39d33d96)
Compare | [47f05197c408d9a6f48622031d899e08dbd02264](https://github.com/dotnet/runtime/commit/47f05197c408d9a6f48622031d899e08dbd02264)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c6a8e4caf07c58141038ca47aedc61ff39d33d96...47f05197c408d9a6f48622031d899e08dbd02264)
Configs | CompilationMode:tiered, RunKind:micro

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

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

  • [ReadReturnBytes - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.06 μs | 1.78 μs | 0.86 | 0.06 | 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.Text.Json.Tests.Perf_Reader*'
```

### System.Text.Json.Tests.Perf_Reader.ReadReturnBytes(IsDataCompact: True, TestCase: LotsOfNumbers)

#### 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)

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