<br> Ok, lets start with a simple thing:<br><br>4128<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6103ff0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6103ff0" target="_blank">class org.drools.rule.Pattern</a>
<br><br> I can't see how 16 rules can create that many patterns. Are you sure you are not recompiling/recreating your rulebase multiple times? If not, then we may have a serious problem...<br><br> []s<br> Edson<br>
<br><div class="gmail_quote">2008/11/26 Kris Nuttycombe <span dir="ltr"><<a href="mailto:kris.nuttycombe@gmail.com">kris.nuttycombe@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi, all,<br><br>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:<br>
<br> StatelessSession session = ruleBase.newStatelessSession();<br> session.execute(initialFact, accumulator);<br><br> accumulator.doSomething();<br><br>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?<br>
<br>Thanks,<br><br>Kris<br><center><h1>
Instance Counts for All Classes (excluding platform)</h1></center>
104827<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf5646f8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf5646f8" target="_blank">class net.jxta.impl.document.LiteXMLElement$charRange</a>
<br>
26806<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf5631e8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf5631e8" target="_blank">class net.jxta.impl.document.LiteXMLElement$tagRange</a>
<br>
26733<a href="http://carrot.gaiam.com:7000/instances/0x2aaad66ea7f0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad66ea7f0" target="_blank">class org.eclipse.jdt.internal.compiler.lookup.MethodBinding</a>
<br>
17366<a href="http://carrot.gaiam.com:7000/instances/0x2aaad66e3c88" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad66e3c88" target="_blank">class [Lorg.eclipse.jdt.internal.compiler.lookup.TypeBinding;</a>
<br>
12412<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf032560" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf032560" target="_blank">class com.sun.enterprise.loader.EJBClassLoader$SentinelInputStream</a>
<br>
10974<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5504450" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5504450" target="_blank">class org.apache.commons.collections.SequencedHashMap$Entry</a>
<br>
8683<a href="http://carrot.gaiam.com:7000/instances/0x2aaad68c3840" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad68c3840" target="_blank">class org.eclipse.jdt.internal.compiler.codegen.CachedIndexEntry</a>
<br>
7708<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf55e9d8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf55e9d8" target="_blank">class net.jxta.impl.document.LiteXMLElement</a>
<br>
7450<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5c4b6c0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5c4b6c0" target="_blank">class org.hibernate.engine.CollectionKey</a>
<br>
6836<a href="http://carrot.gaiam.com:7000/instances/0x2aaaced3c3f8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaaced3c3f8" target="_blank">class org.netbeans.modules.schema2beans.AttrProp</a>
<br>
6271<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6642d18" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6642d18" target="_blank">class org.eclipse.jdt.internal.compiler.lookup.FieldBinding</a>
<br>
5643<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6796890" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6796890" target="_blank">class org.eclipse.jdt.internal.compiler.ast.MessageSend</a>
<br>
4928<a href="http://carrot.gaiam.com:7000/instances/0x2aaad68a6018" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad68a6018" target="_blank">class org.eclipse.jdt.internal.compiler.util.HashtableOfObject</a>
<br>
4895<a href="http://carrot.gaiam.com:7000/instances/0x2aaad66e3fa8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad66e3fa8" target="_blank">class [Lorg.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;</a>
<br>
4546<a href="http://carrot.gaiam.com:7000/instances/0x2aaad669f968" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad669f968" target="_blank">class org.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding</a>
<br>
4472<a href="http://carrot.gaiam.com:7000/instances/0x2aaad687a0a8" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad687a0a8" target="_blank">class [Lorg.eclipse.jdt.internal.compiler.lookup.LocalVariableBinding;</a>
<br>
4128<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6103ff0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6103ff0" target="_blank">class org.drools.rule.Pattern</a>
<br>
3899<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf493c90" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf493c90" target="_blank">class net.jxta.impl.id.UUID.UUID</a>
<br>
3867<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5c416c0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5c416c0" target="_blank">class org.hibernate.engine.EntityEntry</a>
<br>
3731<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5c54d88" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5c54d88" target="_blank">class org.hibernate.collection.PersistentSet</a>
<br>
3685<a href="http://carrot.gaiam.com:7000/instances/0x2aaad66ca420" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad66ca420" target="_blank">class org.eclipse.jdt.internal.compiler.lookup.UnresolvedReferenceBinding</a>
<br>
3360<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6c12770" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6c12770" target="_blank">class org.drools.reteoo.SingleTupleSinkAdapter</a>
<br>
3266<a href="http://carrot.gaiam.com:7000/instances/0x2aaacf543dc0" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaacf543dc0" target="_blank">class net.jxta.document.MimeMediaType</a>
<br>
3264<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6370288" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6370288" target="_blank">class org.drools.spi.PatternExtractor</a>
<br>
3163<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5f8b990" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5f8b990" target="_blank">class org.apache.axis.encoding.TypeMappingImpl$Pair</a>
<br>
3137<a href="http://carrot.gaiam.com:7000/instances/0x2aaad5caad98" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad5caad98" target="_blank">class org.hibernate.collection.PersistentBag</a>
<br>
2881<a href="http://carrot.gaiam.com:7000/instances/0x2aaad681b000" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad681b000" target="_blank">class org.eclipse.jdt.internal.compiler.lookup.MethodScope</a>
<br>
2688<a href="http://carrot.gaiam.com:7000/instances/0x2aaad6161860" target="_blank"> instances</a> of <a href="http://carrot.gaiam.com:7000/class/0x2aaad6161860" target="_blank">class org.drools.base.ClassFieldExtractor</a>
<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>