dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x86: 1 Improvement on 5/12/2026 2:18:49 PM +00:00

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arch-x86 branch-refs/heads/main compilationmode-tiered kind-micro os-windows perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [3caa97ab2ceaf0185ca6de09c6cc497dccfe6f3e](https://github.com/dotnet/runtime/commit/3caa97ab2ceaf0185ca6de09c6cc497dccfe6f3e)
Compare | [303a9aad6d3364bec0a7921966ccf21b970ab644](https://github.com/dotnet/runtime/commit/303a9aad6d3364bec0a7921966ccf21b970ab644)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3caa97ab2ceaf0185ca6de09c6cc497dccfe6f3e...303a9aad6d3364bec0a7921966ccf21b970ab644)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests

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

  • [ReadAsyncThenWriteAsync - Duration of single invocation]()
  • [ADX - Test Multi Config Graph]()
| 57.19 ns | 43.33 ns | 0.76 | 0.36 | 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 'System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests*'
```

### System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.ReadAsyncThenWriteAsync

#### 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 provided benchmarks_ci.py command and the System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.ReadAsyncThenWriteAsync report. Compare the linked baseline and test results, then determine whether the Windows/x86 improvement needs action. The issue does not define a code change or acceptance condition, so completion requires triage before implementation.

Written by the indexing model from the issue text.

Assessment

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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