Hi, I have a package that contains the following definitions: - A metamodel with 6 entities (with 10 fields each entity) - 1 DSL file with 20 sentences defined. - 2 Functions used in the consequence side of some rules. - 30 Excel files (with an average of 20 rows each file) - 10 DSL rules When I try to build this package the system is taking near of 20 minutes. Is this normal? There is a way to improve the performance? Thanks -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-performance-th... Sent from the Drools - User mailing list archive at Nabble.com.