[jboss-jira] [JBoss JIRA] Created: (JBRULES-1509) Performance issue with Drools 3.0

[Naveen GAUBA (JIRA)]

Performance issue with Drools 3.0
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                 Key: JBRULES-1509
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1509
             Project: JBoss Drools
          Issue Type: Quality Risk
      Security Level: Public (Everyone can see)
          Components: Conflict Resolution
    Affects Versions: 3.0.5
         Environment: Windows XP Professional and Sun Solaris
            Reporter: Naveen GAUBA
         Assigned To: Mark Proctor


We are using Drools 3.0 in our project and facing some issues with the way it works.

We have lets say 3 rules in our drools file with different salience values and LHS (IF criteria). When we run the rules for a fact, the Rules Engine first asserts all the 3 rules irrespective of the salience value. Once the assertion is done the Rules Engine runs the appropriate rule according to salience.

Assuming that we had 10-20 rules in our drools file the Engine would have asserted all of them for all the facts and then executed the appropriate rules. But this whole process would consume a lot of processing time.
Could the Rule Engine take care of the salience feature while Asserting the Rules and stop when evaluation of LHS (IF criteria) for a Rule is TRUE. This way it can save some CPU cycles.

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