root@fio-test2:~# fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=/dev/sdb --bs=4k --iodepth=1 --fsync=1 --readwrite=randrw --rwmixread=75 --runtime=10m
test: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=1
fio-3.16
Starting 1 process
Jobs: 1 (f=1): [m(1)][100.0%][r=1677KiB/s,w=524KiB/s][r=419,w=131 IOPS][eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=2028: Fri Jun 11 09:23:16 2021
  read: IOPS=347, BW=1392KiB/s (1425kB/s)(815MiB/600037msec)
   bw (  KiB/s): min=  424, max= 2456, per=100.00%, avg=1391.58, stdev=311.89, samples=1200
   iops        : min=  106, max=  614, avg=347.89, stdev=77.97, samples=1200
  write: IOPS=116, BW=465KiB/s (476kB/s)(272MiB/600037msec); 0 zone resets
   bw (  KiB/s): min=  136, max=  752, per=100.00%, avg=464.98, stdev=92.37, samples=1200
   iops        : min=   34, max=  188, avg=116.24, stdev=23.09, samples=1200
  cpu          : usr=0.73%, sys=2.28%, ctx=835617, majf=0, minf=9
  IO depths    : 1=200.0%, 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 rwts: total=208745,69752,0,278493 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=1

Run status group 0 (all jobs):
   READ: bw=1392KiB/s (1425kB/s), 1392KiB/s-1392KiB/s (1425kB/s-1425kB/s), io=815MiB (855MB), run=600037-600037msec
  WRITE: bw=465KiB/s (476kB/s), 465KiB/s-465KiB/s (476kB/s-476kB/s), io=272MiB (286MB), run=600037-600037msec

Disk stats (read/write):
  sdb: ios=208764/348182, merge=0/0, ticks=122633/467042, in_queue=312536, util=100.00%