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The output of your command "$ vmstat 1 1" is:

procs -----------memory---------- ---swap-- -----io---- -system-- -------cpu-------
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st gu
 0  0  12676 752496 359220 22066040    0    0   342   293  757    0  0  0 100  0  0  0