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10631 :: Memory leakage caused by the use of asyncftpclient's rter process

• Guozy69 (orginal) [2023-11-13T22:28:03+01:00] view original

  Why does using asyncftpclient to loop through files in the working directory of the FTP server and calling the asynchronous procedure rter to download files cause memory to rise (memory leak)? I hope to receive an answer. Thank you (I am a beginner at nim)

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• ITwrx (orginal) [2023-11-15T19:00:08+01:00] view original

  I don't remember the details, but maybe it's using ram for each file like asynchttpserver (and frameworks that use it) were for me when uploading files from a posted form, though i suspect it was returning the ram at some point once the files were transferred, and was not a true mem leak, but once again, i don't remember. I moved away from nim async http frameworks due to this file upload issue, and my prologue-based app was crashing in production for some unknown reason. Very well could have been my fault though. :)

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• termer (orginal) [2023-11-19T17:03:35+01:00] view original

  You can expect anything built with asyncdispatch to leak memory under ORC. Unfortunately that's just the state of things right now. The asyncftpclient lib might be extra bad, but keep in mind that asyncdispatch has memory issues and you often have to run GC_fullcollect manually to free memory eaten up by asyncdispatch because it has cycles. Even then, some still won't get freed.

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• Araq (orginal) [2023-11-19T17:22:04+01:00] view original

  Feel free to report bugs properly, we have extensive tests for leaks like

  https://github.com/nim-lang/Nim/blob/devel/tests/arc/tasyncleak.nim#L2

  and they are green.

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