randrw_16th_8k: (g=0): rw=randrw, bs=(R) 8192B-8192B, (W) 8192B-8192B, (T) 8192B-8192B, ioengine=psync, iodepth=1
...
fio-3.1
Starting 16 threads

randrw_16th_8k: (groupid=0, jobs=16): err= 0: pid=5294: Mon Mar 25 03:15:49 2019
   read: IOPS=1409, BW=11.0MiB/s (11.5MB/s)(662MiB/60100msec)
    clat (usec): min=3, max=1488.6k, avg=11313.66, stdev=22312.95
     lat (usec): min=3, max=1488.6k, avg=11313.90, stdev=22312.95
    clat percentiles (usec):
     |  1.00th=[     5],  5.00th=[     6], 10.00th=[     8], 20.00th=[  3392],
     | 30.00th=[  5145], 40.00th=[  6718], 50.00th=[  8094], 60.00th=[  9503],
     | 70.00th=[ 11338], 80.00th=[ 14484], 90.00th=[ 21103], 95.00th=[ 29754],
     | 99.00th=[ 68682], 99.50th=[109577], 99.90th=[278922], 99.95th=[379585],
     | 99.99th=[893387]
   bw (  KiB/s): min=   32, max= 1202, per=6.30%, avg=710.12, stdev=188.47, samples=1909
   iops        : min=    4, max=  150, avg=88.72, stdev=23.54, samples=1909
  write: IOPS=1418, BW=11.1MiB/s (11.6MB/s)(666MiB/60100msec)
    clat (usec): min=4, max=7202, avg=19.68, stdev=40.91
     lat (usec): min=5, max=7203, avg=20.09, stdev=40.97
    clat percentiles (usec):
     |  1.00th=[    7],  5.00th=[   10], 10.00th=[   12], 20.00th=[   12],
     | 30.00th=[   13], 40.00th=[   15], 50.00th=[   18], 60.00th=[   20],
     | 70.00th=[   22], 80.00th=[   26], 90.00th=[   32], 95.00th=[   37],
     | 99.00th=[   56], 99.50th=[   64], 99.90th=[   91], 99.95th=[  117],
     | 99.99th=[  379]
   bw (  KiB/s): min=   16, max= 1523, per=6.30%, avg=715.24, stdev=247.64, samples=1908
   iops        : min=    2, max=  190, avg=89.36, stdev=30.93, samples=1908
  lat (usec)   : 4=0.02%, 10=8.31%, 20=29.16%, 50=17.64%, 100=0.69%
  lat (usec)   : 250=0.04%, 500=0.66%, 750=0.08%, 1000=0.02%
  lat (msec)   : 2=0.55%, 4=4.52%, 10=20.33%, 20=12.50%, 50=4.56%
  lat (msec)   : 100=0.63%, 250=0.21%, 500=0.05%, 750=0.01%, 1000=0.01%
  lat (msec)   : 2000=0.01%
  cpu          : usr=0.09%, sys=0.48%, ctx=75050, majf=0, minf=0
  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 rwt: total=84702,85250,0, short=0,0,0, dropped=0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
   READ: bw=11.0MiB/s (11.5MB/s), 11.0MiB/s-11.0MiB/s (11.5MB/s-11.5MB/s), io=662MiB (694MB), run=60100-60100msec
  WRITE: bw=11.1MiB/s (11.6MB/s), 11.1MiB/s-11.1MiB/s (11.6MB/s-11.6MB/s), io=666MiB (698MB), run=60100-60100msec

Disk stats (read/write):
  sdb: ios=74911/60641, merge=0/13, ticks=950347/34711, in_queue=987372, util=100.00%