procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
 0  0 101980 297228  21432 224712    0    0     2     2    1    0  0  0 99  0
 0  0 101980 297220  21432 224796    0    0    12     0  405  115  0  0 98  2
 0  0 101980 297220  21432 224812    0    0     0     0  375  104  0  0 100  0
 0  0 101980 297220  21440 224808    0    0     0    32  397  116  0  0 100  0
 0  0 101980 297220  21440 224824    0    0     0     0  386  111  0  0 100  0
 0  0 101980 297220  21440 224832    0    0     0     0  389  106  0  0 100  0
 0  0 101980 296940  21440 224840    0    0     0     0  498  148  0  0 100  0
 0  0 101980 296940  21440 224844    0    0     0     0  378   98  0  0 100  0
 0  0 101980 296940  21448 224852    0    0     0    40  398  122  0  0 100  0
 0  0 101980 296940  21448 224856    0    0     0     4  368  116  0  0 100  0