[root@gasu-close-n05 ~]# fio -filename=/data/test5.file.fio -direct=1 -sync=1 -rw=randwrite -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=randwrite, bs=(R) 512B-64.0KiB, (W) 512B-64.0KiB, (T) 512B-64.0KiB, ioengine=libaio, iodepth=1
fio-3.1
Starting 1 process
journal-test: Laying out IO file (1 file / 1MiB)
Jobs: 1 (f=1): [w(1)][100.0%][r=0KiB/s,w=22.0MiB/s][r=0,w=4015 IOPS][eta 00m:00s]
journal-test: (groupid=0, jobs=1): err= 0: pid=163460: Wed Nov 13 15:04:33 2019
  write: IOPS=3895, BW=22.1MiB/s (23.1MB/s)(1325MiB/60001msec)
    slat (usec): min=14, max=662, avg=17.23, stdev= 3.02
    clat (usec): min=13, max=2089, avg=237.02, stdev=39.91
     lat (usec): min=165, max=2108, avg=254.36, stdev=40.79
    clat percentiles (usec):
     |  1.00th=[  184],  5.00th=[  194], 10.00th=[  198], 20.00th=[  208],
     | 30.00th=[  215], 40.00th=[  223], 50.00th=[  229], 60.00th=[  237],
     | 70.00th=[  247], 80.00th=[  262], 90.00th=[  285], 95.00th=[  306],
     | 99.00th=[  367], 99.50th=[  392], 99.90th=[  537], 99.95th=[  627],
     | 99.99th=[  832]
   bw (  KiB/s): min=20618, max=25295, per=100.00%, avg=22662.35, stdev=1024.22, samples=120
   iops        : min= 3815, max= 4208, avg=3904.90, stdev=67.37, samples=120
  lat (usec)   : 20=0.01%, 250=71.82%, 500=28.05%, 750=0.10%, 1000=0.02%
  lat (msec)   : 2=0.01%, 4=0.01%
  cpu          : usr=2.03%, sys=8.36%, ctx=233761, majf=0, minf=102
  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=0,233744,0, short=0,0,0, dropped=0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
  WRITE: bw=22.1MiB/s (23.1MB/s), 22.1MiB/s-22.1MiB/s (23.1MB/s-23.1MB/s), io=1325MiB (1389MB), run=60001-60001msec

Disk stats (read/write):
    dm-4: ios=2/232820, merge=0/0, ticks=1/53339, in_queue=53352, util=89.33%, aggrios=2/233766, aggrmerge=0/0, aggrticks=1/56388, aggrin_queue=56296, aggrutil=93.86%
    dm-1: ios=2/233766, merge=0/0, ticks=1/56388, in_queue=56296, util=93.86%, aggrios=0/29220, aggrmerge=0/0, aggrticks=0/6310, aggrin_queue=6308, aggrutil=11.23%
  sdh: ios=0/29221, merge=0/0, ticks=0/6338, in_queue=6338, util=10.57%
  sdi: ios=0/29221, merge=0/0, ticks=0/6238, in_queue=6233, util=10.39%
  sdj: ios=1/29220, merge=0/0, ticks=1/6257, in_queue=6256, util=10.43%
  sdq: ios=1/29220, merge=0/0, ticks=0/6711, in_queue=6705, util=11.18%
  sdr: ios=0/29221, merge=0/0, ticks=0/6738, in_queue=6736, util=11.23%
  sds: ios=0/29221, merge=0/0, ticks=0/5820, in_queue=5816, util=9.70%
  sdt: ios=0/29221, merge=0/0, ticks=0/5732, in_queue=5729, util=9.55%
  sdag: ios=0/29221, merge=0/0, ticks=0/6653, in_queue=6651, util=11.09%