Install Nmon
CentOS users need to install nmon from rpmforge/repoforge repository. It is not present in Epel.
CentOs 4 :
i386 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el4.rf.i386.rpm
x86_64 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el4.rf.x86_64.rpm
CentOs5 :
i386 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el5.rf.i386.rpm
x86_64 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el5.rf.x86_64.rpm
CnetOs6 :
i686 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.i686.rpm
x86_64 rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
sudo yum install nmon
sudo apt-get install nmon
Usage :
$ nmon
And then choose what information you want to be displayed: C – for CPU; M – for Memory; T – for Processes
Keyboard shortcuts
The following keyboard shortcuts can be used turn on (and off) statistics about various components:
c = CPU l = CPU Long-term – = Faster screen updates
m = Memory j = Filesystems + = Slower screen updates
d = Disks n = Network V = Virtual Memory
r = Resource N = NFS v = Verbose hints
k = kernel t = Top-processes . = only busy disks/procs
h = more options q = Quit