Hi friends, We are using centos4.0 on Dell Machines. Everytime we use top command on one of the systems, we see system usage is b/w 75.-80% and we are not able to trace who is eating this much system cpu. 02:00:06 up 13 days, 5:39, 3 users, load average: 7.12, 7.25, 7.34 76 processes: 68 sleeping, 6 running, 0 zombie, 2 stopped CPU states: cpu user nice system irq softirq iowait idle total 24.4% 0.0% 75.5% 0.0% 0.0% 0.0% 0.0% cpu00 26.4% 0.0% 73.6% 0.0% 0.0% 0.0% 0.0% cpu01 22.4% 0.0% 77.5% 0.0% 0.0% 0.0% 0.0% Mem: 6161704k av, 4758088k used, 1403616k free, 0k shrd, 103108k buff 2184012k actv, 1792248k in_d, 100068k in_c Swap: 2530196k av, 8k used, 2530188k free 3143184k cached Is there any command or utility through which we can know who is using how much cpu resources? Thanks & Regards Ankush Grover