Hi all, After playing with serializing knowledgepackages a bit, I stumbled upon some behaviour which I cannot explain at the moment. I can only hope someone can deliver a hint of insight into this. The situation: Creating and executing a rule engine with the very same rules. In the first attempt, rules are serialized first. Note that only the rules are serialized, not the engine. In the second attempt, the "normal" (= "as in the hello world sample") procedure is used to feed the rules to the engine. I noticed some performance differences at execution time, which amaze me a bit, as I can't see a reason why execution would differ... When loading the serialized rules, rule execution is slightly slower and, more important, there are some glitches in the performance (execution times over 10 times slower than average execution). Unserialized rules run much smoother and much more consistent. Does anyone have any explanation for this? I am very interested to find out. Thanks a lot. Regards, Frank -- View this message in context: http://drools.46999.n3.nabble.com/Serializing-knowledgepackages-execution... Sent from the Drools: User forum mailing list archive at Nabble.com.