avg-cpu:  %user   %nice %system %iowait  %steal   %idle
sum	     1.890      0.000    556.280  12502.550      0.000    239.430 
avg	     0.014      0.000      4.183     94.004      0.000      1.800 
stddev	     0.015      0.000      3.732      4.307      0.000      2.936 


Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await  svctm  %util
sum	     0.000 2259735.430      7.000  18206.720     28.000 9115596.520 132370.460  18804.000 150705.230   1619.460  13299.620 
avg	     0.000  16990.492      0.053    136.893      0.211  68538.320    995.267    141.383   1133.122     12.176     99.997 
stddev	     0.000   5704.613      0.283     44.025      1.131  22233.200     38.199      6.879    511.312     20.691      0.171