dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 1 Improvement on 6/23/2026 3:44:23 PM +00:00

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arch-x64 branch-refs/heads/main compilationmode-tiered kind-micro Noise os-windows perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [461fd2adbf736b4298d9a0c58ad8dbcecaf83629](https://github.com/dotnet/runtime/commit/461fd2adbf736b4298d9a0c58ad8dbcecaf83629)
Compare | [0d1a20fb14109f277df06ebee3f83c964f9dcc61](https://github.com/dotnet/runtime/commit/0d1a20fb14109f277df06ebee3f83c964f9dcc61)
Diff | [Diff](https://github.com/dotnet/runtime/compare/461fd2adbf736b4298d9a0c58ad8dbcecaf83629...0d1a20fb14109f277df06ebee3f83c964f9dcc61)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in Microsoft.Extensions.DependencyInjection.ActivatorUtilitiesBenchmark

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

  • [CreateInstance_1 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 70.85 ns | 64.54 ns | 0.91 | 0.64 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.Extensions.DependencyInjection.ActivatorUtilitiesBenchmark*'
```

### Microsoft.Extensions.DependencyInjection.ActivatorUtilitiesBenchmark.CreateInstance_1

#### 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 ActivatorUtilitiesBenchmark.cs source around CreateInstance_1 and the benchmark report for the Windows x64 comparison. Run the provided benchmarks_ci.py command and review the profiling and benchmarking workflow documents. The payload does not define a code change or a clear completion condition, so triage must establish whether the measured improvement needs follow-up.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
performance
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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