avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	    91.290      0.000    402.440   2965.540      0.000  16540.720 
avg	     0.456      0.000      2.012     14.828      0.000     82.704 
stddev	     0.107      0.000      0.634      4.390      0.000      4.265 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000 2296738.000      7.000  19214.950     28.000 9223337.500 192028.690  34027.530 356229.810   2130.510  19998.820 
avg	     0.000  11483.690      0.035     96.075      0.140  46116.688    960.143    170.138   1781.149     10.653     99.994 
stddev	     0.000   6562.120      0.232     14.139      0.928   6813.546     31.204     33.002    411.520      1.709      0.145