Async-sig June 2018

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async-sig@python.org

4 participants
2 discussions

Tips and tricks to track memory leaks in realtime inside an AsyncIO daemon ?
by Ludovic Gasc 19 Jun '18

19 Jun '18

Hi, We have now an AsyncIO daemon with memory leaks. To track this, I'm thinking to use this: https://pythonhosted.org/Pympler/muppy.html and objgraph. But, because it's a live daemon and not a script, instead to implement an HTTP endpoint to launch the memory snapshot locally, I'm thinking to use epdb: https://github.com/sassoftware/epdb To have directly a Python console to explore interactively inside the process to have a more flexible way to debug. I did a quick'n'dirty lab', it seems to work more or less to run epdb inside a thread executor, but before to continue on this idea, I'm interested in how you track your memory leaks inside your AsyncIO daemons ? Thanks for your feedbacks. -- Ludovic Gasc (GMLudo)

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async file IO library
by Dima Tisnek 09 Jun '18

09 Jun '18

Hi group, It seems that Python docs don't make a recommendation about which library to use for asynchronous access to files when using asyncio. Is there a canonical recommendation? Is it a good idea? There's at least one 3rd party library popular enough to deserve own stackoverflow tag, however AFAIU it uses thread pool, while most OS'es provide some or other API, making native implementation possible, at least in theory. What are your thoughts? Thanks, Dima

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