avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           3.09    0.00    2.12    1.02    0.04   93.73

Device:         rrqm/s   wrqm/s     r/s     w/s    rkB/s    wkB/s avgrq-sz avgqu-sz   await r_await w_await  svctm  %util
vda               0.00     7.28    0.16   18.21     2.01   352.87    38.65     0.07    3.68    0.61    3.71   3.53   6.48