procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
 2  0      0 491008 199604 741304    0    0     2     1  147   54  4  1 95  0
 0  0      0 487528 199604 745220    0    0     0     8  884 2284 28 26 46  0
 0  0      0 488104 199604 744588    0    0     0     0  188  207  1  0 99  0
 1  0      0 491328 199612 741432    0    0     0   144  219  233  1  1 95  3
 0  0      0 491328 199612 741388    0    0     0   148  250  245  1  0 99  0