[rules-users] Parallelization

Hi Drools squad, This is a follow-up to my previous speed-related post. By boss is still pushing to get 35ms down a bit, and I'm looking at parallelization options. I've looked through the forums, but not successfully... The options I see, are: 1. KnowledgeBase partitioning (setting KnowledgeBaseConfiguration to use multi-threads) - I tried this, and got the error pasted at the bottom. My suspicion is that it starts a thread, and meanwhile the Java thread continues, and disposes of the session before evaluation is complete. 2. Creating multiple Java threads, each of which starts its own KnowledgeSession. - I started this, but need to confirm that this is possible. What's happening currently, is that the Java thread continues, and closes my database connection prematurely, and so, I am working on adding some sort of counting-semaphore, to wait for all the threads to complete before continuing the Java thread. Should I pursue either of these ideas? I will probably work on the second today. The other idea I had was to try Sequential Mode, but I don't think my data is applicable to a StatelessKnowledgeSession. Thanks, Daniel *************************** Partition task manager caught an unexpected exception: null Drools is capturing the exception to avoid thread death. Please report stack trace to development team. java.util.concurrent.RejectedExecutionException at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1760) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:767) at java.util.concurrent.ThreadPoolExecutor.ensureQueuedTaskHandled(ThreadPoolExecutor.java:758) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:655) at org.drools.reteoo.PartitionTaskManager.enqueue(PartitionTaskManager.java:75) at org.drools.reteoo.AsyncCompositeObjectSinkAdapter.doPropagateAssertObject(AsyncCompositeObjectSinkAdapter.java:49) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:344) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:147) at org.drools.reteoo.PartitionTaskManager$FactAssertAction.execute(PartitionTaskManager.java:188) at org.drools.reteoo.PartitionTaskManager$PartitionTask.run(PartitionTaskManager.java:112) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Parallelization-tp809... Sent from the Drools - User mailing list archive at Nabble.com.