Use
$ top
last pid: 17552; load averages: 0.04, 0.03, 0.04 15:16:01
93 processes: 88 sleeping, 2 zombie, 3 on cpu
CPU states: % idle, % user, % kernel, % iowait, % swap
Memory: 8192M real, 3841M free, 2867M swap in use, 5629M swap free
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
17551 oracle 1 22 0 3320K 2792K cpu/0 0:00 0.45% ls
17552 oracle 1 8 0 1864K 1256K cpu/1 0:00 0.27% top
17550 oracle 1 42 0 7408K 2248K cpu/3 0:00 0.06% sshd
17548 root 1 28 0 5864K 2248K sleep 0:00 0.06% sshd
12667 oracle 1 58 0 1124M 1051M sleep 0:07 0.03% oracle
12651 oracle 1 38 0 1125M 1061M sleep 0:02 0.02% oracle
12649 oracle 14 58 0 1128M 1053M sleep 0:06 0.02% oracle
11590 oracle 11 58 0 855M 780M sleep 0:04 0.02% oracle
361 root 13 20 0 7088K 6480K sleep 27:08 0.01% picld
11830 oracle 11 58 0 854M 780M sleep 0:03 0.01% oracle
22488 oracle 6 48 0 22M 9384K sleep 6:52 0.00% tnslsnr
13488 root 1 48 0 3168K 1624K sleep 4:22 0.00% sshd
1 root 1 58 0 880K 360K sleep 1:56 0.00% init
404 root 20 58 0 35M 21M sleep 0:37 0.00% vxsvc
24 root 1 58 0 9840K 8320K sleep 0:36 0.00% vxconfigd