[esb-issues] [JBoss JIRA] Commented: (JBESB-1504) CBR using rules has poor performance

[Kevin Conner (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBESB-1504?page=comments#action_12395964 ] 
            
Kevin Conner commented on JBESB-1504:
-------------------------------------

It is very hard to say what the problem is when we have had no visibility of your test.

Can you please create an attachment containing the esb file to be deployed, the associated source code and the instructions for your client (if there is one).


> CBR using rules has poor performance
> ------------------------------------
>
>                 Key: JBESB-1504
>                 URL: http://jira.jboss.com/jira/browse/JBESB-1504
>             Project: JBoss ESB
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Content Based Routing
>    Affects Versions: 4.2.1
>         Environment: SOA-P 4.2.0.beta1
>            Reporter: Martin Vecera
>
> We have a simple performance that uses ContentBasedRouter to route XML messages:
> <action class="org.jboss.soa.esb.actions.ContentBasedRouter" name="ContentBasedRouter">
>                <property name="ruleSet" value="MyESBRules-XPath.drl"/>
>                <property name="ruleLanguage" value="XPathLanguage.dsl"/>
>                <property name="ruleReload" value="true"/>
>                <property name="destinations">
>                   <route-to destination-name="regular1" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular2" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular3" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular4" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular5" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular6" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular7" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular8" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular9" service-category="wiretapCategory1" service-name="regularService"/>
>                   <route-to destination-name="regular0" service-category="wiretapCategory1" service-name="catchService"/>
>                </property>
>             </action>
>  I have created a rule set of 100 rules. Like this:
> package com.jboss.soa.esb.routing.cbr
> import org.jboss.soa.esb.message.Message;
> import org.jboss.soa.esb.message.format.MessageType;
> expander XPathLanguage.dsl
> global java.util.List destinations;
> rule "ProductId1"
> 	salience 100
> 	when
> 		xpathEquals "/Order/OrderLines/OrderLine/Product/@productId", "1"
> 	then
> 		Destination : "regular1";
> end
> ...
> rule "ProductId299"
> 	salience 100
> 	when
> 		xpathEquals "/Order/OrderLines/OrderLine/Product/@productId", "299"
> 	then
> 		Destination : "regular0";
> end
> rule "Default rule"
> 	salience 1
> 	when
> 	then
> 		Destination : "regular0";
> end
> See https://svn.corp.jboss.com/repos/soa/trunk/qa/tests/quickstarts/performance8/MyESBRules-XPath.drl for the whole file.
> The performance is very poor (see SOA-240 for reports). Only a tens of messages per second.
> What's the problem here? Is the Rules engine really so slow? Or is it parsing the file every time a message arrives?

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