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[6:29] <royw> Hi Jython users, question about unloading Jython. We've got an application that users Jython to load some configuration information, and then never touches it again
[6:30] <royw> we've got some memory pressure, and profiling reveals that zipimport._zip_directory_cache is consuming 10 MB
[6:30] <royw> is there any way to flush that cache? Py.getSystemState().cleanup() isn't doing it
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[16:31] -christel- [Global Notice] As you may have noticed we appear to have trotted over the grumpy troll's bridge -- the network is currently being attacked and as a result we're temporarily without services as we work to get a working copy of the db fired up elsewhere. Apologies for the inconvenience.
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[17:54] -mist- [Global Notice] Sorry for the continued lack of services, we're currently moving it to an alternate location. Thanks for your patience.
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[19:34] <jimbaker> royw, that's an interesting question - jython does maintain caches to classes etc but with weakrefs so you might have some success with del sys.modules["zipimport"]
[19:34] <jimbaker> but my playing with jconsole is not encouraging with respect to that
[19:34] <jimbaker> (would need to use a better heap analysis tool to say definitively)
[19:36] <pjenvey> it's a plain dict so you can .clear() it if necessary, which is kind of lame though, it's nota public API
[19:36] <pjenvey> though setuptools used to tinker it with, almost as if it was public
[19:37] <pjenvey> do you have a lot of zip files or eggs in the python path? that seems like a rather excessive amount of data in there
[19:37] <pjenvey> i don't believe jars would get indexed in zipimport at all
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[20:00] -mist- [Global Notice] We're still working on getting services (nickserv, chanserv, alis, etc.) back up and running. Another global notice will be sent once we're happy that they are back properly.
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[20:02] -mquin- [Global Notice] Services are now back but may be lagged for a little while as everyone identifies. Thank you for your patience and for flying freenode!
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[21:02] -mquin- [Global Notice] That should be the last bump, services are back now and should be working normally. Thank you all again for your patience and understanding.
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[21:05] <corrnelia> Stakkars?
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[21:19] <jimbaker> pjenvey, it's quite reasonable that clearing out a sys.modules entry should delete the corresponding root so that classes can unload upon gc. this is the behavior i would expect
[21:20] <jimbaker> but i don't see any testing for it; the closest is in test_jy_internals around proxy creation
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[21:27] <jimbaker> pjenvey, before i forget - both pip and easy_install seemed to be utterly borked right now; i haven't dug into any details, but looks like a 301 to https is causing issues
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[21:45] <pjenvey> jimbaker - looks like _zip_directory_cache lives as a static var on the zipimport class
[21:45] <pjenvey> which is not good, but that explains what you're seeing, it not being cleared
[22:05] <jimbaker> pjenvey, indeed - we get this nice comment in zipimport.java:
[22:05] <jimbaker> // XXX: Ideally this cache would be per PySystemState
[22:05] <jimbaker> public static PyDictionary _zip_directory_cache = new PyDictionary();
[22:06] <jimbaker> all is made clear now. a cache that is not weak :) they are sneaky
[22:18] <pjenvey> http://paste.ofcode.org/Z9s249GnTPYDKbzp27qPWz should probably fix it, I haven't tried it though, and I don't think our zipimport has any tests
[22:18] <pjenvey> I think test_zipimport is still not adapted
[22:19] <pjenvey> if easy_install still works its probably ok =P
[22:20] <pjenvey> of course it's broken right now, isn't it
[22:20] <pjenvey> is it ok on 2.5?
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