dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Regression on 4/22/2026 10:34:28 PM +00:00

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arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro os-linux perf-regression runkind-micro runtimetype-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [b54e86d71096afebe72cf2722b341bf004c8f14c](https://github.com/dotnet/runtime/commit/b54e86d71096afebe72cf2722b341bf004c8f14c)
Compare | [9619cf5696f4e63232b5edf429df6014955193fa](https://github.com/dotnet/runtime/commit/9619cf5696f4e63232b5edf429df6014955193fa)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b54e86d71096afebe72cf2722b341bf004c8f14c...9619cf5696f4e63232b5edf429df6014955193fa)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Collections.Sort<IntClass>

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

  • [Array_ComparerClass - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 5.36 ms | 7.06 ms | 1.32 | 0.29 | 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<IntClass>.Array_ComparerClass(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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