We have CENTOS 5.3 on DELL server. I tried to use "sar -b" or "sar -u" and it only show report starting on 12:00 A.M. my questions are: 1. for "sar -u" or "sar -b" how can I generate two or three days ago report? 2. how to generate daily report from "sa2 " peocess? Thanks. ___________________________________________________ 您的生活即時通 － 溝通、娛樂、生活、工作一次搞定！ http://messenger.yahoo.com.tw/