root@newsgrabber-dedupe:~# fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=100G --readwrite=randrw --rwmixread=50
test: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=64
fio-2.16
Starting 1 process
Jobs: 1 (f=1): [m(1)] [99.6% done] [259.1MB/259.2MB/0KB /s] [66.6K/66.4K/0 iops] [eta 00m:01s]
test: (groupid=0, jobs=1): err= 0: pid=2284: Mon Apr  8 17:25:35 2019
  read : io=51213MB, bw=213751KB/s, iops=53437, runt=245342msec
  write: io=51187MB, bw=213642KB/s, iops=53410, runt=245342msec
  cpu          : usr=12.52%, sys=65.41%, ctx=361040, majf=0, minf=9
  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=13110531/w=13103869/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
     latency   : target=0, window=0, percentile=100.00%, depth=64

Run status group 0 (all jobs):
   READ: io=51213MB, aggrb=213751KB/s, minb=213751KB/s, maxb=213751KB/s, mint=245342msec, maxt=245342msec
  WRITE: io=51187MB, aggrb=213642KB/s, minb=213642KB/s, maxb=213642KB/s, mint=245342msec, maxt=245342msec

Disk stats (read/write):
  sda: ios=13095994/13089464, merge=0/45, ticks=4450212/4792628, in_queue=9228660, util=100.00%