Mario, Each working memory executes single threaded and as such will use only one processor. As long as you have each of your requests creating a working memory (ideally from a shared pre-loaded/pre-compiled rulebase) and executing in a separate thread, it should be using all your processors. What I mean is, drools does not constrain/limit processor use... can you double check that you have the requests running concurrently, each on its own thread, or provide us a test case so that we can verify if there is any problem in drools causing this behavior?
Thanks, Edson 2007/11/8, Mario <[EMAIL PROTECTED]>: > > Hi all, > > I've got a fairly simple web application with DRools 4.0.3 deployed on a > Tomcat > 5.5, where I'm running a stress test of about 100 users doing fact changes > every > half a second. There are about 20 rules and about 20 facts. Each action > loads > and compiles the rule base, creates a new working memory and creates the > facts > inside it. I know it's not efficient (rules should be loaded only once in > the > application, working memory should be created only once in the session) > but > that's not my question. > This is a 4-way machine. > 1. if I don't load and use drools, the web application uses all 4 > processors > 2. if drools does the above mentioned work, only ONE processor is used, at > about > 100% CPU. > Does it make sense that way? Do I have to set anything so the other > processors > are used as well? > > Otherwise, I'd have a general performance question: is it more efficient > to > empty the WM (one fact at a time) each time many facts need to be > reloaded, or > just drop it and create it again? I'm talking about some 200 facts, and a > few > hundred rules. > > Thanks a lot, > M > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com
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