dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Improvement on 8/11/2026 8:01:00 AM +00:00

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aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro Look Again os-linux perf-improvement runkind-micro untriaged wasm-aot
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [c12540eb53044276c55a86c3a834c662eff2872f](https://github.com/dotnet/runtime/commit/c12540eb53044276c55a86c3a834c662eff2872f)
Compare | [6597edb0936de18005623b1a17adf29880df60e6](https://github.com/dotnet/runtime/commit/6597edb0936de18005623b1a17adf29880df60e6)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c12540eb53044276c55a86c3a834c662eff2872f...6597edb0936de18005623b1a17adf29880df60e6)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Collections.Sort<Int32>

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

  • [LinqQuery - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 656.90 μs | 585.94 μs | 0.89 | 0.11 | 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<Int32>.LinqQuery(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

Research direction

Start with src/benchmarks/micro/libraries/System.Collections/Sort.cs lines 63-71 and inspect the linked benchmark and test reports. Reproduce the System.Collections.Sort LinqQuery(Size: 512) result with the provided benchmarks_ci.py command, then compare the baseline and test commits. The issue does not define a requested change or acceptance criterion, so confirm the expected outcome with maintainers.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python, wasm
Domain
performance, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
30/100

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