dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Improvement on 6/25/2026 8:43:50 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 | [cd27dcec16016aa54be6a09962d1b509150cf99b](https://github.com/dotnet/runtime/commit/cd27dcec16016aa54be6a09962d1b509150cf99b)
Compare | [d6c7fb69f882c3ffd49de58dd009330e2a915402](https://github.com/dotnet/runtime/commit/d6c7fb69f882c3ffd49de58dd009330e2a915402)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cd27dcec16016aa54be6a09962d1b509150cf99b...d6c7fb69f882c3ffd49de58dd009330e2a915402)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int64>

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

  • [SquareRootBenchmark - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 325.00 ns | 14.65 ns | 0.05 | 0.40 | 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.Runtime.Intrinsics.Tests.Perf_Vector128Of*'
```

### System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Int64>.SquareRootBenchmark

#### 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 linked Perf_Vector128OfT.cs benchmark source and the benchmarking workflow documentation. Run the provided benchmarks_ci.py command, then compare the baseline and test results and inspect the linked test report; the issue does not specify what code change or outcome is required beyond investigating the measured improvement.

Written by the indexing model from the issue text.

Assessment

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

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