Hi again all, Am i the only one noting these issues on the version? If this is not the right place to discuss this, could someone point me in the right direction (do I enter an issue in JIRA with potential patches, ...)?
Thanks in advance > Date: Mon, 25 Jun 2012 00:01:16 -0700 > From: jshem...@hotmail.com > To: rules-users@lists.jboss.org > Subject: [rules-users] Migrating from 4.0.7 to 5.4.0.Final > > Hi all, > > I'm currently in the process of migrating an application using drools 4.0.7 > to 5.4.0.Final and I've stumbled into a few issues with the new version that > I find disturbing: > > - Our unit tests failed because the JVM ran out of perm gen space, which > looks odd as in 4.0.7 we've had quite a margin to start with. > - Doing several Yourkit analysis, I finally find classloading leaks: > * *org.drools.rule.builder.dialect.asm.ClassGenerator.EMPTY_METHOD_BODY* > is a static instance which will hold to the last instance of > InternalClassLoader created > * *org.drools.rule.constraint.MvelConstraint* uses an ExecutorHolder that > spawns daemon threads and keeps them in a pool. Problem is these threads > create class loaders, and can only be garbage collected when the thread > dies, meaning never in my case... > - I've quick fixed both issues, the second one by simply disabling the > thread pool. > - Once this is done, the perm gen behaves correctly, but the execution times > are 2-3 times slower on very large set of rules (~1000). Looking at Yourkit > analysis again, I see that the number of classes generated and the perm gen > consumption is about 3 times higher in 5.4.0.Final. I honestly don't know > how to address this. > > I've tried to find some other posts concerning these issues, to no avail. I > don't see any work around this, short of code changes, and for reducing the > number of generated classes I simply have no idea. > > Please correct me if I am wrong, any help would be greatly appreciated > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Migrating-from-4-0-7-to-5-4-0-Final-tp4018215.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users
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