Re: [rules-users] permgen leak

The fix was merged this morning in 5.6.0-SNAPSHOT. It requires an explicit disposal of both the KnowledgeBuilder and the KnowledgeBase once you are done with them: KnowledgeBuilder builder = ... KnowledgeBase kBase = ... ... ( (KnowledgeBuilderImpl) builder ).dispose(); ... // create, use and dispose sessions here ( (KnowledgeBaseImpl) kBase ).dispose(); Of course you need appropriate initial/max permgen to allocate at least the largest KB. I didn't have time to check the combinations, but based on your JVM you may also need to enable the following options: -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC With these explicit calls, the permgen test that was posted in this thread works as expected, as class(loaders) are released and the permgen is GC-ed. As anticipated, 6.x does not have this problem. Davide On 12/16/2013 03:27 AM, pmander wrote: