avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	    21.990      0.000    546.310  13136.750      0.000     95.010 
avg	     0.159      0.000      3.959     95.194      0.000      0.688 
stddev	     0.050      0.000      0.558      4.934      0.000      5.244 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000   1253.850     52.990  17300.370    211.960 7039797.980 112708.590  19702.550 160605.290   1232.440  13799.410 
avg	     0.000      9.086      0.384    125.365      1.536  51013.029    816.729    142.772   1163.806      8.931     99.996 
stddev	     0.000      5.165      0.486     38.958      1.945  16125.734    110.020      8.217    239.990      3.388      0.103