procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 0  0      0 30014208 115912 965100    0    0    14     4   37  143  1  0 98  0  0
 0  0      0 30013956 115912 965100    0    0     0     0  179  392  0  0 99  0  0
 0  0      0 30013956 115920 965100    0    0     0    24  159  280  0  0 99  0  0
 0  0      0 30010932 115920 965100    0    0     0   200  313  989  1  0 99  0  0
 0  0      0 30010932 115920 965104    0    0     0     0  157  316  0  0 99  0  0