#jython IRC Log

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IRC Log for 2016-10-19

Timestamps are in GMT/BST.

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[17:04] <shaegler> hi again, i am working on an eclipse app with embedded jython. i noticed that each time we instantiate a new PythonInterpreter, it recompiles the site modules which in turn fills up the permgen. is this expected? any pointers to where i can start digging into this?
[17:06] <agronholm> shaegler: not sure but with java 8 there won't be a permgen to be filled
[17:07] <shaegler> ok, so the expection is that with java 8 all the java classes created from the site modules are eventually GC'ed?
[17:07] <agronholm> I don't know the exact mechanics
[17:08] <shaegler> or asked differently, is there a way to share the site module classes between PythonInterpreters?
[17:09] <shaegler> (i am quite new to the jython architecture so apologies for nonsensical questions)
[17:10] <agronholm> are you trying to say that it recompiles all modules in site-packages when you instantiate the interpreter?
[17:10] <agronholm> that doesn't seem right
[17:11] <shaegler> i'll step through the code again to verify, but this was my first impression
[17:12] <shaegler> i basically noticed that after upgrading from 2.7b2 to 2.7final our permgen limits was reached (jdk7)
[17:13] <shaegler> the main reason is probably due to the increased size of the /lib subdir
[17:13] <shaegler> but as said there is additional permgen consumed on every PythonInterpreter instantiation and loading the site modules seems to be the main culprit
[17:14] <agronholm> loading the site modules? do you mean site.py or modules in site-packages?
[17:15] <shaegler> i am referring to the Py.importSiteIfSelected() call in the PythonInterpreter constructor
[17:16] <agronholm> it won't import any site-packages stuff
[17:18] <shaegler> not sure i understand... the imp.load('site') is doing a lot of work and consuming permgen each time
[17:21] <shaegler> ok, gotta run... thanks so far, i'll step through this again later... maybe it is just a caching/permission issue somewhere
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Index

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