[root@gasu-close-n04 ~]# fio -filename=/data/test2.file.fio -direct=1 -sync=1 -rw=read -bssplit=512/10:1k/5:2k/5:4k/60:8k/2:16k/4:32k/4:64k/10  -numjobs=1 -iodepth=1 --ioengine=libaio -runtime=60 -size=1m -time_based -group_reporting -name=journal-test
journal-test: (g=0): rw=read, bs=(R) 512B-64.0KiB, (W) 512B-64.0KiB, (T) 512B-64.0KiB, ioengine=libaio, iodepth=1
fio-3.1
Starting 1 process
Jobs: 1 (f=1): [R(1)][100.0%][r=71.8MiB/s,w=0KiB/s][r=7074,w=0 IOPS][eta 00m:00s]
journal-test: (groupid=0, jobs=1): err= 0: pid=168760: Wed Nov 13 15:12:30 2019
   read: IOPS=7065, BW=70.5MiB/s (73.0MB/s)(4232MiB/60001msec)
    slat (usec): min=6, max=544, avg=16.39, stdev= 2.85
    clat (usec): min=9, max=4349, avg=123.54, stdev=25.57
     lat (usec): min=100, max=4366, avg=140.10, stdev=27.26
    clat percentiles (usec):
     |  1.00th=[   95],  5.00th=[   97], 10.00th=[   99], 20.00th=[  106],
     | 30.00th=[  113], 40.00th=[  116], 50.00th=[  119], 60.00th=[  123],
     | 70.00th=[  133], 80.00th=[  135], 90.00th=[  149], 95.00th=[  169],
     | 99.00th=[  204], 99.50th=[  206], 99.90th=[  212], 99.95th=[  215],
     | 99.99th=[  255]
   bw (  KiB/s): min=65813, max=77379, per=100.00%, avg=72443.87, stdev=1847.41, samples=120
   iops        : min= 6885, max= 7158, avg=7085.67, stdev=35.82, samples=120
  lat (usec)   : 10=0.01%, 100=16.12%, 250=83.87%, 500=0.01%, 750=0.01%
  lat (usec)   : 1000=0.01%
  lat (msec)   : 2=0.01%, 4=0.01%, 10=0.01%
  cpu          : usr=2.73%, sys=14.73%, ctx=423921, majf=0, minf=148
  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=423914,0,0, 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=70.5MiB/s (73.0MB/s), 70.5MiB/s-70.5MiB/s (73.0MB/s-73.0MB/s), io=4232MiB (4438MB), run=60001-60001msec

Disk stats (read/write):
    dm-2: ios=422803/0, merge=0/0, ticks=49174/0, in_queue=49194, util=82.22%, aggrios=423916/0, aggrmerge=0/0, aggrticks=53870/0, aggrin_queue=53697, aggrutil=89.47%
    dm-1: ios=423916/0, merge=0/0, ticks=53870/0, in_queue=53697, util=89.47%, aggrios=52989/0, aggrmerge=0/0, aggrticks=5547/0, aggrin_queue=5539, aggrutil=10.48%
  sde: ios=52990/0, merge=0/0, ticks=6300/0, in_queue=6289, util=10.48%
  sdf: ios=52989/0, merge=0/0, ticks=6219/0, in_queue=6210, util=10.35%
  sdm: ios=52989/0, merge=0/0, ticks=4957/0, in_queue=4950, util=8.25%
  sdn: ios=52989/0, merge=0/0, ticks=4951/0, in_queue=4943, util=8.24%
  sdu: ios=52989/0, merge=0/0, ticks=4906/0, in_queue=4896, util=8.16%
  sdae: ios=52990/0, merge=0/0, ticks=6187/0, in_queue=6180, util=10.30%
  sdaf: ios=52990/0, merge=0/0, ticks=4767/0, in_queue=4758, util=7.93%
  sdag: ios=52990/0, merge=0/0, ticks=6094/0, in_queue=6087, util=10.14%