[rules-users] How to improve drools performance?

2011-10-12 Thread arrehman 
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


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Re: [rules-users] How to improve drools performance?

2011-10-12 Thread Dean Whisnant 
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-boun...@lists.jboss.org 
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of arrehman
Sent: Wednesday, October 12, 2011 1:21 PM
To: rules-users@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


--
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Re: [rules-users] How to improve drools performance?

2011-10-12 Thread 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 d...@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-boun...@lists.jboss.org [mailto:
 rules-users-boun...@lists.jboss.org] On Behalf Of arrehman
 Sent: Wednesday, October 12, 2011 1:21 PM
 To: rules-users@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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