mpstat  [  -A  ]  [  -I  { SUM | CPU | SCPU | ALL } ] [ -u ] [ -P { cpu
       [,...] | ON | ALL } ] [ -V ] [ interval [ count ] ]

The mpstat command  writes  to  standard  output  activities  for  each
       available  processor,  processor 0 being the first one.  Global average
       activities among all processors are also reported.  The mpstat  command
       can be used both on SMP and UP machines, but in the latter, only global
       average activities will be printed. If no activity has  been  selected,