vmstat is not aware of field width in RHEL 6

Issue

• With the growing amount of memory that systems have, some of the reporting tools such as vmstat need to become aware of and adapt to these new bigger numbers.

• For example:

  # vmstat 5
  procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
   r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
   1 62      0 97759648   7516 157848576    0    0     0    24    7    4  0  0 100  0  0
   0 63      0 97415184   7520 158177408    0    0     0 63204 1356  136  0  2 75 23  0
   0 63      0 97071552   7520 158504272    0    0     0 66224 1365  136  0  2 75 23  0
   0 63      0 96737176   7520 158822816    0    0     0 64718 1352  125  0  2 75 23  0
  

• Note what is being reported in free, buff, cache, bo, in, and the CPU fields.   The larger numbers are throwing off the column alignment and making the output harder to read.   It should look more like the following:

  # vmstat 5
  procs   ------------memory------------ ---swap--- ----io---- --system-- ------cpu------
   r  b   swpd     free   buff     cache   si   so    bi    bo    in   cs us sy id  wa st
   1 62      0 97759648   7516 157848576    0    0     0    24     7    4  0  0 100  0  0
   0 63      0 97415184   7520 158177408    0    0     0 63204  1356  136  0  2  75 23  0
   0 63      0 97071552   7520 158504272    0    0     0 66224  1365  136  0  2  75 23  0
   0 63      0 96737176   7520 158822816    0    0     0 64718  1352  125  0  2  75 23  0