procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
 4  2      0 161676   9716  55700    0    0   248  2020   50  131  5  4 84  7
 4  2      0 161668   9716  55704    0    0     0 16000  253  504 80 20  0  0
 3  2      0 161668   9716  55704    0    0     0 16000  249  522 66 34  0  0
 3  2      0 161608   9716  55704    0    0     0 15936  251  508 80 20  0  0
 3  2      0 161548   9716  55704    0    0     0 15936  249  523 73 28  0  0
 4  2      0 161488   9716  55704    0    0     0 15936  250  517 84 16  0  0
 3  2      0 161488   9724  55704    0    0     0 15876  252  469 57 43  0  0
 4  2      0 161428   9724  55704    0    0     0 15872  253  504 60 40  0  0
 3  2      0 161428   9724  55704    0    0     0 15936  248  500 24 76  0  0
 4  2      0 161428   9740  55704    0    0     0 15840  258  475 52 48  0  0