Hi I have numerous .drl files that contain around 100 rules, in 5 packages. Please tell me what can be an optimsed solution so that my application performance is not made to suffer? I should load all the drl files in and form a Rule Base. After this depending on my application logic I go on picking up rules from the rule base to be fired. How does drool sreach for the rule that I specify to be fired using an agenda filter, does it search the entire Rule base for a single rule or it has some optimization features? Please let me know as I have many rules in my application and I want to optimize searching for a given rule to be fired. Waiting for an early response -- View this message in context: http://www.nabble.com/Performance-Issue-when-multiple-drl-files-loaded-tp... Sent from the drools - user mailing list archive at Nabble.com.