Install the repository
CentOS 5.x

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

CentOS 6.x 64 bit

rpm -Uhv http://apt.sw.be/redhat/el6/en/i386/rpmforge/RPMS/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

Install mytop

yum -y install mytop

Configuration

Odds are, you will get an error initially running this program unless you configure it first.

whereis mytop

Example: /usr/bin/mytop or /usr/local/bin/mytop

nano /usr/bin/mytop or nano /usr/local/bin/mytop

Locate the following lines:

my %config = (
delay => 5,
host => ‘localhost’,
db => ‘test’,
user => ‘root’, …

change the following line and save the file:

db => ‘mysql’,
Run mytop

Plesk

mytop -u admin -p`cat /etc/psa/.psa.shadow`

WHM / cPanel

mytop

Now – go here to learn how to use it!
http://linux.die.net/man/1/mytop