avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	     1.200      0.000    834.820  12449.790      0.000     14.090 
avg	     0.009      0.000      6.277     93.607      0.000      0.106 
stddev	     0.021      0.000      1.929      2.063      0.000      0.541 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000 986718.000      5.000  11186.000     20.000 4017204.000  96256.860   4197.460  49844.150   1849.570  13189.600 
avg	     0.000   7418.932      0.038     84.105      0.150  30204.541    723.736     31.560    374.768     13.907     99.170 
stddev	     0.000   2977.744      0.226     24.730      0.905   8435.254     62.692     21.057    230.937     10.001      2.251