avg-cpu:  %user   %nice %system %iowait  %steal   %idle

          10.43    0.00    1.51    1.51    0.00   86.56

Device:rrqm/s  wrqm/s  r/s   w/s  rkB/s  wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util

sda 4477.00   9.00  951.00  13.00 24288.00 2492.00 55.56   0.21    0.22    0.21    0.92   0.17  16.00

%user :Show the percentage  of  CPU  utilization  that  occurred while executing at the user level (application).

%nice  :Show  the  percentage  of  CPU  utilization that occurred while executing at the user level with nice priority.                

%iowait:Show  the  percentage  of  time that the CPU or CPUs were  idle during which the system had an outstanding disk  I/O  request.      

%steal :Show  the percentage of time spent in involuntary wait by the virtual CPU or CPUs while the hypervisor was  servicing another virtual processor.                  

%idle :Show  the  percentage  of  time that the CPU or CPUs were idle and the system did not have an outstanding disk  I/O   request.