avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	     4.070      0.000     78.840   6347.930      0.000   6869.100 
avg	     0.031      0.000      0.593     47.729      0.000     51.647 
stddev	     0.054      0.000      0.207      4.121      0.000      4.199 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000 1466863.130      5.000  22957.010     20.000 5959995.250  70990.180   1929.060  11871.950    826.530  13299.410 
avg	     0.000  11029.046      0.038    172.609      0.150  44811.994    533.761     14.504     89.263      6.215     99.996 
stddev	     0.000   2090.342      0.226     50.455      0.905   8285.349     72.120      2.303     25.470      1.647      0.126