Hi, How to calculate the no. of uEngine cycles required for a particular operation (packet reception, header verification and table lookup)? Its very difficult to interpret the same with the statistics provided by the History window in the transactor. Am I missing something? Any help is appreciated. Thanks, Srivatsan ---------------------------------------------------------- Srivatsan S MindTree Consulting, Bangalore. Ph: 91-80-6711777 Extn:1428 ----------------------------------------------------------