Interrupts 'top-like' utility for Linux
initial idea: http://et.redhat.com/~jmh/tools/xen/itop
Forked it to make it support more CPUs (up to 24 tested)
== Usage itop [-a|-t]
-a : force display ALL CPUs (caution if you have many CPUs and a narrow screen) + TOTAL
-t : DON'T display ALL CPUs, just the TOTAL
Default: display ALL CPUs + TOTAL (unless CPUs > 8, then just display the TOTAL)