avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	     4.360      0.000    261.910   3124.640      0.000   9909.140 
avg	     0.033      0.000      1.969     23.494      0.000     74.505 
stddev	     0.064      0.000      0.742     10.446      0.000     10.990 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000 1555813.000      5.000  12320.000     20.000 6275580.000 135428.950  18844.400 203621.920   1435.690  13300.400 
avg	     0.000  11697.842      0.038     92.632      0.150  47184.812   1018.263    141.687   1530.992     10.795    100.003 
stddev	     0.000   1973.689      0.226      1.647      0.905   1120.110     10.048      2.867     72.868      0.187      0.035