# ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10
or
# ps -eo pcpu,pid,user,args | sort -r -k1 | less
iostat command
You can also use iostat command which report Central Processing Unit (CPU) statistics and input/output statistics for devices and partitions. It can be use to find out your system's average CPU utilization since the last reboot
# iostat