dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Regression on 4/20/2026 4:48:34 PM +00:00

Open
#71,838 1 comment 0 reactions 0 assignees View on GitHub
aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro os-linux perf-regression runkind-micro untriaged wasm-aot
Dominant language
No language data
Stars
10
Forks
8
PR merge metrics
PR metrics pending

Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [76f37d3574b516f751cb04c778381c532b4569fa](https://github.com/dotnet/runtime/commit/76f37d3574b516f751cb04c778381c532b4569fa)
Compare | [f9b2061609873ed0895d20424367af9e9f6e95be](https://github.com/dotnet/runtime/commit/f9b2061609873ed0895d20424367af9e9f6e95be)
Diff | [Diff](https://github.com/dotnet/runtime/compare/76f37d3574b516f751cb04c778381c532b4569fa...f9b2061609873ed0895d20424367af9e9f6e95be)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Collections.IterateForNonGeneric<Int32>

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

  • [ArrayList - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.26 μs | 2.51 μs | 1.11 | 0.16 | 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.IterateForNonGeneric*'
```

### System.Collections.IterateForNonGeneric<Int32>.ArrayList(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)

Contributor guide

No contributing guide indexed for this repository

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.