dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Improvement on 6/6/2026 4:52:12 AM +00:00

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aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro Noise 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 | [503cdd143baa519977f4e5f8cc7449fcbfc50c7b](https://github.com/dotnet/runtime/commit/503cdd143baa519977f4e5f8cc7449fcbfc50c7b)
Compare | [10aeb7b7b598aefe7199a065e65316dcf8350815](https://github.com/dotnet/runtime/commit/10aeb7b7b598aefe7199a065e65316dcf8350815)
Diff | [Diff](https://github.com/dotnet/runtime/compare/503cdd143baa519977f4e5f8cc7449fcbfc50c7b...10aeb7b7b598aefe7199a065e65316dcf8350815)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_VectorOf<Single>

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

  • [ZeroBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 43.75 ns | 1.04 ns | 0.02 | 0.47 | 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.Numerics.Tests.Perf_VectorOf*'
```

### System.Numerics.Tests.Perf_VectorOf<Single>.ZeroBenchmark

#### 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.Numerics.Tests.Perf_VectorOf.ZeroBenchmark source at src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorOfT.cs#L38-L39 and review the linked test report and IR data. Reproduce the benchmark with benchmarks_ci.py using the documented filter, then determine whether the reported wasm AOT improvement is actionable and provide a verified explanation or follow-up.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux, python, wasm
Domain
performance, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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