procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 0  0 100308   2860  12400  10520    0    0     4     2    4     3  0  0 99  0
 0  0 100308   2860  12400  10520    0    0     0     0  101    12  0  0 100  0
 0  0 100308   2860  12400  10520    0    0     0     0  101    12  0  0 100  0
 0  0 100308   2860  12400  10520    0    0     0     0  101    12  0  0 100  0
 0  0 100308   2860  12400  10520    0    0     0     0  101    13  0  0 100  0
 0  0 100308   2860  12400  10520    0    0     0     1  101    13  0  0 100  0