When wanting to view the overall performance of your server, nothing beats
htop. Although not typically installed by default,
htop is one of those utilities that I recommend everyone installs, since it's indispensable when wanting to check on the resource utilization of your server. If you don't already have
htop installed, all you need to do is install the
# apt-get install htop
When you run
htop at your shell prompt, you will see the
htop application in all its glory. In some cases, it may be beneficial to run
root, since doing so does give you additional options such as being able to kill processes, though this is not required.
At the top of the
htop display, you'll see a progress meter for each ...