128m: (g=0): rw=randwrite, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
...
128m: (g=0): rw=randwrite, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
fio 1.57
Starting 32 processes

128m: (groupid=0, jobs=32): err= 0: pid=29100
  write: io=1548.6MB, bw=158534KB/s, iops=39633 , runt= 10002msec
    clat (usec): min=51 , max=39866 , avg=816.94, stdev=199.89
     lat (usec): min=51 , max=39866 , avg=817.08, stdev=199.89
    bw (KB/s) : min= 4176, max= 5552, per=3.08%, avg=4875.38, stdev=44.98
  cpu          : usr=0.32%, sys=1.41%, ctx=396846, majf=0, minf=981
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w/d: total=0/396414/0, short=0/0/0
     lat (usec): 100=0.01%, 250=5.59%, 500=35.46%, 750=21.51%, 1000=8.08%
     lat (msec): 2=27.21%, 4=1.68%, 10=0.39%, 50=0.07%

Run status group 0 (all jobs):
  WRITE: io=1548.6MB, aggrb=158533KB/s, minb=162338KB/s, maxb=162338KB/s, mint=10002msec, maxt=10002msec

Disk stats (read/write):
  sdb: ios=0/392018, merge=0/11, ticks=0/249265, in_queue=249213, util=99.02%
