dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/arm64: 2 Improvements on 8/6/2026 11:56:07 PM +00:00

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ampere arch-arm64 branch-refs/heads/main compilationmode-tiered kind-micro Look Again 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 | [0ec4de7c5597614d976eb3d49cced0433e99e749](https://github.com/dotnet/runtime/commit/0ec4de7c5597614d976eb3d49cced0433e99e749)
Compare | [b7130aa5e416e88ac48fafe92bf56a9d64e13c97](https://github.com/dotnet/runtime/commit/b7130aa5e416e88ac48fafe92bf56a9d64e13c97)
Diff | [Diff](https://github.com/dotnet/runtime/compare/0ec4de7c5597614d976eb3d49cced0433e99e749...b7130aa5e416e88ac48fafe92bf56a9d64e13c97)
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
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [Property_Set_class - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 19.06 ns | 12.68 ns | 0.67 | 0.49 | False | | |
|
  • [StaticMethod5_arrayNotCached_int_string_struct_class_bool - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 119.99 ns | 97.43 ns | 0.81 | 0.50 | 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.Reflection.Invoke*'
```

### System.Reflection.Invoke.Property_Set_class

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Invoke.StaticMethod5_arrayNotCached_int_string_struct_class_bool

#### 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)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the System.Reflection.Invoke benchmarks in src/benchmarks/micro/runtime/System.Reflection/Invoke.cs at lines 167-177 and 366-373. Run the documented benchmarks_ci.py command, then compare the linked baseline and test reports for the two arm64 Ubuntu benchmarks. Done requires a reproducible result and a clearly identified runtime change to pursue.

Written by the indexing model from the issue text.

Assessment

Tech stack
git, linux, python, ubuntu
Domain
performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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