Good software to monitor disk io, memory and cpu use? [closed]

Solution 1:

What you want is cacti.

Solution 2:

If you aren't quite happy with the way RRDT-based tools work, you may want to try Zabbix.

CPU, memory, disk and network are in the default template for all OSes, so it should be relatively configuration free. You can get Zabbix packages (both server and client) with many Linux distributions' package management system directly.

It uses more traditional databases like MySQL, so it does consume more resources than RRDT.

Solution 3:

GKrellm.

GKrellM is a single process stack of system monitors which supports applying themes to match its appearance to your window manager, Gtk, or any other theme.