Vmstat
From Linuxintro
vmstat is a command that allows you to watch what your computer is doing, e.g. how many blocks are read in a specified timeframe.
To watch what has happened in 10 second-intervalls, issue:
$ vmstat 10 procs -----------memory---------- ---swap-- -----io---- -system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 304 2211340 534660 453608 0 0 2 1 1 0 2 0 97 1 0 0 0 304 2211356 534660 453608 0 0 0 5 343 1393 0 0 100 0 0 0 0 304 2211388 534660 453608 0 0 0 0 321 1248 0 0 100 0 0 0 0 304 2211380 534660 453608 0 0 0 4 361 1447 0 0 100 0 0
