Hi, When I need to add som rules (in my case 100) to some chain it takes various time, depending on the number of existing rules in the chain. So when I add 100 rules to empty chain, it takes 1.8sec. If tehere is 1000 rules int the chain, it takes 4.5sec and if there is 10000 rules it takes 21sec. My problem is, that i need to add this rules to chain which contains 20000 rules in short time. I think, that the way of adding rules into chain is very innefective. Could someone tell me how the adding works internally? What data structures are used? Because I need solve this and find the way how to add new rules quickly. Thanks for replies