Memory leak appears only when multiprocessing

Posted by Sandro on Stack Overflow See other posts from Stack Overflow or by Sandro
Published on 2010-04-24T20:13:48Z Indexed on 2010/04/24 20:23 UTC
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python

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multiprocessing

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memory-leaks

I am trying to use python's multiprocessing library to hopefully gain some performance. Specifically I am using its map function. Now, for some reason when I swap it out with its single threaded counterpart I don't get any memory leaks over time. But using the multiprocessing version of map causes my memory to go through the roof. For the record I am doing something which can easily hog up loads of memory, but what would the difference be between the two to cause such a stark difference?

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