[rules-users] How to improve drools performance?

[Edson Tirelli]

   That works. Just FYI, the same data is available through the Drools
MBeans... you can use jconsole to monitor it or any other JMX console.

   Edson

2011/10/12 Dean Whisnant <dean at basys.com>

> You could create a listener and combine it with a log.  There is
> org.drools.event.rule.DefaultAgendaEventListener that has two methods I use
> to log which rule started firing and when the rule completes firing with:
>
>        @Override
>        public void beforeActivationFired(BeforeActivationFiredEvent event)
>        {
>                try
>                {
>                        logFile.write("Package(" +
> event.getActivation().getRule().getPackageName() + ").Rule(" +
> event.getActivation().getRule().getName() + ") firing ... ");
>                }
>                catch (Exception e) { }
>        }
>
>        @Override
>        public void afterActivationFired(AfterActivationFiredEvent event)
>        {
>                try
>                {
>                        logFile.write("done!\n");
>                }
>                catch (Exception e) { }
>        }
>
> You could obviously do other logging with time and date stamps, or send it
> to a database rather than a .log file like I'm doing here.  In my case I get
> a list of all rules that fire in a fireallrules session.  I can see if a
> rule fires multiple times, or ends up in an endless loop.
>
> Peace!
>
> Dean
>
> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] On Behalf Of arrehman
> Sent: Wednesday, October 12, 2011 1:21 PM
> To: rules-users at lists.jboss.org
> Subject: [rules-users] How to improve drools performance?
>
> Is there a way to log / monitor the time taken for rule in a Drools rule
> set?
>
> Is there a way to make sure that one rule is not executed more than once(It
> seems to be happening in my case)
>
> What are the general guidelines on improving Drools performance?
>
> Currently I am using a one single DRL file with 100 odd rules.
>
> Any additiional information you need will be provided.
>
> Thanks,
>
> Abdul
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/How-to-improve-drools-performance-tp3416326p3416326.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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-- 
  Edson Tirelli
  JBoss Drools Core Development
  JBoss by Red Hat @ www.jboss.com
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