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 246504 501356 751408 2917880    0    0     5    22    8    3 16  6 78  0  0
 1  0 246504 501340 751408 2917916    0    0     0     0  389  612  4  1 95  0  0
 1  0 246504 501272 751408 2917916    0    0     0     4  562 1027  8  6 86  0  0
 1  0 246504 499768 751408 2917896    0    0     0    88  806 1125 21 13 66  0  0
 1  0 246504 498812 751408 2917916    0    0     0     0  825  801 34  5 61  0  0
 1  0 246504 497092 751408 2917916    0    0     0     0  842 1050 30  6 64  0  0
 1  0 246504 496656 751408 2917916    0    0     0     0  851  891 36  5 59  0  0
 1  0 246504 495512 751408 2917960    0    0     0     8 1090 1316 44  7 48  0  0
 3  0 246504 496668 751408 2917964    0    0     0     0  763  853 34  5 61  0  0
 2  0 246504 496036 751408 2917964    0    0     0     0  741  584 36  3 61  0  0
 1  0 246504 496368 751408 2917964    0    0     0     0  715  729 31  4 65  0  0
 2  0 246504 495416 751408 2918016    0    0     0     0  888 1137 32  7 61  0