root@ns3085090:~/fio-2.0.9#
root@ns3085090:~/fio-2.0.9# ./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
test: (g=0): rw=randrw, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=64
fio-2.0.9
Starting 1 process
Jobs: 1 (f=1): [m] [100.0% done] [332.5M/110.3M /s] [85.2K/28.3K iops] [eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=11592: Wed May 23 08:50:17 2018
  read : io=3070.8MB, bw=316051KB/s, iops=79012 , runt=  9949msec
  write: io=1025.4MB, bw=105530KB/s, iops=26382 , runt=  9949msec
  cpu          : usr=7.88%, sys=65.02%, ctx=223422, majf=0, minf=4
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.1%, >=64=0.0%
     issued    : total=r=786097/w=262479/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
   READ: io=3070.8MB, aggrb=316050KB/s, minb=316050KB/s, maxb=316050KB/s, mint=9949msec, maxt=9949msec
  WRITE: io=1025.4MB, aggrb=105529KB/s, minb=105529KB/s, maxb=105529KB/s, mint=9949msec, maxt=9949msec

Disk stats (read/write):
    md3: ios=782243/261217, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=392995/262467, aggrmerge=53/16, aggrticks=250550/41124, aggrin_queue=291740, aggrutil=98.57%
  sdb: ios=394158/262466, merge=50/17, ticks=249028/40160, in_queue=289244, util=98.57%
  sda: ios=391832/262468, merge=57/15, ticks=252072/42088, in_queue=294236, util=98.57%
root@ns3085090:~/fio-2.0.9#
root@ns3085090:~/fio-2.0.9# ./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randread
test: (g=0): rw=randread, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=64
fio-2.0.9
Starting 1 process
Jobs: 1 (f=1): [r] [100.0% done] [547.2M/0K /s] [140K/0  iops] [eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=11595: Wed May 23 08:50:25 2018
  read : io=4096.0MB, bw=564281KB/s, iops=141070 , runt=  7433msec
  cpu          : usr=8.61%, sys=73.90%, ctx=164700, majf=0, minf=68
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.1%, >=64=0.0%
     issued    : total=r=1048576/w=0/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
   READ: io=4096.0MB, aggrb=564281KB/s, minb=564281KB/s, maxb=564281KB/s, mint=7433msec, maxt=7433msec

Disk stats (read/write):
    md3: ios=1043999/13, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=524287/16, aggrmerge=1/1, aggrticks=210428/2, aggrin_queue=210652, aggrutil=98.14%
  sdb: ios=522923/16, merge=2/1, ticks=209152/4, in_queue=209416, util=98.14%
  sda: ios=525651/16, merge=0/1, ticks=211704/0, in_queue=211888, util=98.09%
root@ns3085090:~/fio-2.0.9#
root@ns3085090:~/fio-2.0.9# ./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randwrite
test: (g=0): rw=randwrite, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=64
fio-2.0.9
Starting 1 process
Jobs: 1 (f=1): [w] [100.0% done] [0K/304.5M /s] [0 /77.1K iops] [eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=11598: Wed May 23 08:50:46 2018
  write: io=4096.0MB, bw=316982KB/s, iops=79245 , runt= 13232msec
  cpu          : usr=5.50%, sys=85.68%, ctx=94272, majf=0, minf=4
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.1%, >=64=0.0%
     issued    : total=r=0/w=1048576/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
  WRITE: io=4096.0MB, aggrb=316981KB/s, minb=316981KB/s, maxb=316981KB/s, mint=13232msec, maxt=13232msec

Disk stats (read/write):
    md3: ios=0/1042442, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=0/1048272, aggrmerge=0/313, aggrticks=0/370626, aggrin_queue=370786, aggrutil=98.83%
  sdb: ios=0/1048410, merge=0/176, ticks=0/187104, in_queue=187096, util=96.08%
  sda: ios=0/1048135, merge=0/451, ticks=0/554148, in_queue=554476, util=98.83%
root@ns3085090:~/fio-2.0.9#