Re: [rules-users] Drools compiler memory & stateless sessions?

Hi, all, I'm encountering significant problems with running out of memory when executing a small ruleset (only 16 rules, < 100 facts). I've run jmap on the process (which has previously spawned multiple stateless sessions in parallel) and it looks like Drools, and specifically the Eclipse jdt compiler, is seriously eating up memory. The code calling the is fairly simple; one of the initial facts is an accumulator that I refer to later: StatelessSession session = ruleBase.newStatelessSession(); session.execute(initialFact, accumulator); accumulator.doSomething(); where ruleBase is a shared instance, and initialFact is a base fact that is expanded during rules processing. Is there something I should be doing to dispose the session after use to release the objects created by the drools compiler after use? I'm using a shared RuleBase, and I'm wondering whether it is somehow keeping references around. Are these sorts of object counts to be expected? Thanks, Kris Instance Counts for All Classes (excluding platform) 104827 instances<http://carrot.gaiam.com:7000/instances/0x2aaacf5646f8>of class net.jxta.impl.document.LiteXMLElement$charRange<http://carrot.gaiam.com:7000/class/0x2aaacf5646f8> 26806 instances <http://carrot.gaiam.com:7000/instances/0x2aaacf5631e8> of class net.jxta.impl.document.LiteXMLElement$tagRange<http://carrot.gaiam.com:7000/class/0x2aaacf5631e8> 26733 instances <http://carrot.gaiam.com:7000/instances/0x2aaad66ea7f0> of class org.eclipse.jdt.internal.compiler.lookup.MethodBinding<http://carrot.gaiam.com:7000/class/0x2aaad66ea7f0> 17366 instances <http://carrot.gaiam.com:7000/instances/0x2aaad66e3c88> of class [Lorg.eclipse.jdt.internal.compiler.lookup.TypeBinding;<http://carrot.gaiam.com:7000/class/0x2aaad66e3c88> 12412 instances <http://carrot.gaiam.com:7000/instances/0x2aaacf032560> of class com.sun.enterprise.loader.EJBClassLoader$SentinelInputStream<http://carrot.gaiam.com:7000/class/0x2aaacf032560> 10974 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5504450> of class org.apache.commons.collections.SequencedHashMap$Entry<http://carrot.gaiam.com:7000/class/0x2aaad5504450> 8683 instances <http://carrot.gaiam.com:7000/instances/0x2aaad68c3840> of class org.eclipse.jdt.internal.compiler.codegen.CachedIndexEntry<http://carrot.gaiam.com:7000/class/0x2aaad68c3840> 7708 instances <http://carrot.gaiam.com:7000/instances/0x2aaacf55e9d8> of class net.jxta.impl.document.LiteXMLElement<http://carrot.gaiam.com:7000/class/0x2aaacf55e9d8> 7450 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5c4b6c0> of class org.hibernate.engine.CollectionKey<http://carrot.gaiam.com:7000/class/0x2aaad5c4b6c0> 6836 instances <http://carrot.gaiam.com:7000/instances/0x2aaaced3c3f8> of class org.netbeans.modules.schema2beans.AttrProp<http://carrot.gaiam.com:7000/class/0x2aaaced3c3f8> 6271 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6642d18> of class org.eclipse.jdt.internal.compiler.lookup.FieldBinding<http://carrot.gaiam.com:7000/class/0x2aaad6642d18> 5643 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6796890> of class org.eclipse.jdt.internal.compiler.ast.MessageSend<http://carrot.gaiam.com:7000/class/0x2aaad6796890> 4928 instances <http://carrot.gaiam.com:7000/instances/0x2aaad68a6018> of class org.eclipse.jdt.internal.compiler.util.HashtableOfObject<http://carrot.gaiam.com:7000/class/0x2aaad68a6018> 4895 instances <http://carrot.gaiam.com:7000/instances/0x2aaad66e3fa8> of class [Lorg.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;<http://carrot.gaiam.com:7000/class/0x2aaad66e3fa8> 4546 instances <http://carrot.gaiam.com:7000/instances/0x2aaad669f968> of class org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding<http://carrot.gaiam.com:7000/class/0x2aaad669f968> 4472 instances <http://carrot.gaiam.com:7000/instances/0x2aaad687a0a8> of class [Lorg.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;<http://carrot.gaiam.com:7000/class/0x2aaad687a0a8> 4128 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6103ff0> of class org.drools.rule.Pattern<http://carrot.gaiam.com:7000/class/0x2aaad6103ff0> 3899 instances <http://carrot.gaiam.com:7000/instances/0x2aaacf493c90> of class net.jxta.impl.id.UUID.UUID<http://carrot.gaiam.com:7000/class/0x2aaacf493c90> 3867 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5c416c0> of class org.hibernate.engine.EntityEntry<http://carrot.gaiam.com:7000/class/0x2aaad5c416c0> 3731 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5c54d88> of class org.hibernate.collection.PersistentSet<http://carrot.gaiam.com:7000/class/0x2aaad5c54d88> 3685 instances <http://carrot.gaiam.com:7000/instances/0x2aaad66ca420> of class org.eclipse.jdt.internal.compiler.lookup.UnresolvedReferenceBinding<http://carrot.gaiam.com:7000/class/0x2aaad66ca420> 3360 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6c12770> of class org.drools.reteoo.SingleTupleSinkAdapter<http://carrot.gaiam.com:7000/class/0x2aaad6c12770> 3266 instances <http://carrot.gaiam.com:7000/instances/0x2aaacf543dc0> of class net.jxta.document.MimeMediaType<http://carrot.gaiam.com:7000/class/0x2aaacf543dc0> 3264 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6370288> of class org.drools.spi.PatternExtractor<http://carrot.gaiam.com:7000/class/0x2aaad6370288> 3163 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5f8b990> of class org.apache.axis.encoding.TypeMappingImpl$Pair<http://carrot.gaiam.com:7000/class/0x2aaad5f8b990> 3137 instances <http://carrot.gaiam.com:7000/instances/0x2aaad5caad98> of class org.hibernate.collection.PersistentBag<http://carrot.gaiam.com:7000/class/0x2aaad5caad98> 2881 instances <http://carrot.gaiam.com:7000/instances/0x2aaad681b000> of class org.eclipse.jdt.internal.compiler.lookup.MethodScope<http://carrot.gaiam.com:7000/class/0x2aaad681b000> 2688 instances <http://carrot.gaiam.com:7000/instances/0x2aaad6161860> of class org.drools.base.ClassFieldExtractor<http://carrot.gaiam.com:7000/class/0x2aaad6161860> _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users