Right, including optimization controls over garbage collection. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Corneil du Plessis Sent: Wednesday, August 13, 2008 8:50 AM To: 'Rules Users List' Subject: RE: [rules-users] Java code Vs Drools No HotSpot refers to the portion of the JVM that compiles java bytecode to native code and applies various optimisations over time depending on the frequency with which code is executed. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Hehl, Thomas Sent: 13 August 2008 13:47 To: 'Rules Users List' Subject: RE: [rules-users] Java code Vs Drools What does this mean? Because of garbage collection? -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Corneil du Plessis Sent: Wednesday, August 13, 2008 5:42 AM To: 'Rules Users List' Subject: RE: [rules-users] Java code Vs Drools Make sure when you do performance testing that you run through enough iterations so that the engine code benefits from HotSpot. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Harsh Jetly Sent: 13 August 2008 11:03 To: rules-users(a)lists.jboss.org Subject: [rules-users] Java code Vs Drools I have been evaluating the rule engine (ie Drools 4.0.4). I have created an application which has about 20 rules . I insert about 500 arraylists into the working memory and each arraylist contains about 4 objects. The rule engine picks the object that is the best match from the arraylist and stores it . This processing takes about 0.953 secs . Now this very same scenario I have implemented in using java code (if ..else)...it takes about 0.016secs . I was expecting the rule engine to give a better performance. Considering the use of alpha node caching and other factors of the rete algorithm. This is how one of the rules look in the rule file : rule "P1 110" salience 1 activation-group "1" when PriorityType( pricetype == "10,20,30,40,110" ) list :ArrayList( ) t:TlbObjectAttributeData( lngAttrTypeId == 110 ) from list then result.add(t); end Am I doing something wrong or this application is not harnessing the pluses of the rule engine . If so can you please tell me which kind of application should I build to highlight the performance of a rule engine . Appreciate it Regards Harsh Jetly SOA Center of Excellence ______________________________________________________________________ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users