joerick / joerick/pyinstrument

Support multithreaded profiling

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#352 5 comments 17 reactions 0 assignees View on GitHub

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Dominant language
Python
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Description

Thanks for pyintrument - it's incredibly useful

I had need to trace a multithreaded python app and examine the relationship between threads. Obviously in some cases multithreading can be a little interesting in python, but in this particular case works well.

I have extended a fork of pyinstrument to support showing all child threads from the one where profiling starts. I get nice results with all threads separated which has been hugely helpful.

I'll file a PR and reference this issue. It's still a bit of a WIP, but i'd be curious to see if it looks reasonable to you.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing pyinstrument's existing profiling flow and how it handles the thread where profiling begins, then compare it with the fork described in the issue. The work is done when profiling a multithreaded Python application shows all child threads separately and makes their relationships understandable.

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Assessment

Tech stack
python
Domain
performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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