See
http://www.javaworld.com/javaworld/javaqa/2003-04/01-qa-0411-hotspot.html
Am 13.08.2008 um 13:46 schrieb Hehl, Thomas:
What does this mean? Because of garbage collection?
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 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: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Harsh Jetly
Sent: 13 August 2008 11:03
To: [email protected]
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
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https://lists.jboss.org/mailman/listinfo/rules-users
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https://lists.jboss.org/mailman/listinfo/rules-users
