dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Regression on 4/23/2026 4:42:27 AM +00:00

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aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro os-linux perf-regression runkind-micro triage-error untriaged wasm-aot
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [4c7b3dad459319709f88c3b75c21236977e9c147](https://github.com/dotnet/runtime/commit/4c7b3dad459319709f88c3b75c21236977e9c147)
Compare | [2b16e8b5ade016f59af473acca1efd5c37bbfa2c](https://github.com/dotnet/runtime/commit/2b16e8b5ade016f59af473acca1efd5c37bbfa2c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4c7b3dad459319709f88c3b75c21236977e9c147...2b16e8b5ade016f59af473acca1efd5c37bbfa2c)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

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

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

  • [OrderedDictionary - Duration of single invocation]()
  • [ADX - Test Multi Config Graph]()
| 802.31 ns | 877.21 ns | 1.09 | 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.CtorGivenSize*'
```

### System.Collections.CtorGivenSize<Int32>.OrderedDictionary(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)

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