Hi, you can create multiple stateless sessions with the same rules in different threads, and processes to take advantage of the multiple cores that you have..

Cheers


On Mon, Dec 10, 2012 at 8:11 PM, ping <jinpingv@hotmail.com> wrote:
hi,
I'm new to Drools and I'm doing some performance benchmark to see if I can
scale up a StatelessSession engine. I did the benchmark on a 8 core machine
but the results shows the engine can only take advantage of 1.5 cores at any
time.
here is my tests:
1. create a KnowledgeBase
2. started multiple threads (I tried 4/8/16 threads) running same loop:
create a stateless session from KnowledgeBase and create a new fact, then
insert the fact into the session.

After running the test for multiple times I found that it can only utilize
at most 1.5 cores at the same time.
I also found that most of time threads were blocked by static class locks
like:
public static synchronized ProcessRuntimeFactoryService
getProcessRuntimeFactoryService()


Anyone has experience scaling up a stateless drools engine?

Thanks a lot.

-Ping



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