dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 1 Improvement on 9/1/2026 4:53:12 PM +00:00

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arch-x64 branch-11.0 compilationmode-tiered kind-mlnet Noise os-windows perf-improvement runkind-mlnet runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [a1d60271d589de52ba513a8265a9038da9eaba5c](https://github.com/dotnet/sdk/commit/a1d60271d589de52ba513a8265a9038da9eaba5c)
Compare | [f8a811758057986566da27d06d8f03a7e5e226bf](https://github.com/dotnet/sdk/commit/f8a811758057986566da27d06d8f03a7e5e226bf)
Diff | [Diff](https://github.com/dotnet/sdk/compare/a1d60271d589de52ba513a8265a9038da9eaba5c...f8a811758057986566da27d06d8f03a7e5e226bf)
Configs | CompilationMode:tiered, RunKind:mlnet

### Improvements in Microsoft.ML.Benchmarks.HashBench

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

  • [HashVectorKey - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.13 ms | 2.69 ms | 0.86 | 0.00 | True | | |

![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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.ML.Benchmarks.HashBench*'
```

### Microsoft.ML.Benchmarks.HashBench.HashVectorKey

#### 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/real-world/Microsoft.ML.Benchmarks/HashBench.cs lines 186-187 and run the provided benchmarks_ci.py command filtered to Microsoft.ML.Benchmarks.HashBench*. Investigate the HashVectorKey result on Windows x64 and confirm any change by rerunning the benchmark and comparing its measured duration.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
performance, testing-qa
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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