stresser: (g=0): rw=write, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=1
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=4
Starting 2 processes
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)

stresser: (groupid=0, jobs=1): err= 0: pid=2111
  read : io=4,096MiB, bw=240MiB/s, iops=15,333, runt= 17096msec
    clat (usec): min=10, max=114, avg=12.94, stdev= 1.76
    bw (KiB/s) : min=    0, max=250048, per=97.14%, avg=238326.86, stdev=41652.75
  write: io=4,096MiB, bw=22,766KiB/s, iops=1,422, runt=184230msec
    clat (usec): min=13, max=821K, avg=605.36, stdev=8762.46
    bw (KiB/s) : min=    0, max=88384, per=104.78%, avg=23854.62, stdev=18465.70
  cpu          : usr=19.17%, sys=2.67%, ctx=67493, majf=1, minf=2102310
  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 r/w: total=262144/262144, short=0/0
     lat (usec): 20=94.93%, 50=1.69%, 100=0.25%, 250=0.16%, 500=0.12%
     lat (usec): 750=0.19%, 1000=0.22%
     lat (msec): 2=1.05%, 4=0.73%, 10=0.15%, 20=0.19%, 50=0.16%
     lat (msec): 100=0.11%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=2320
  read : io=4,039MiB, bw=163MiB/s, iops=10,413, runt= 24821msec
    clat (usec): min=2, max=171, avg=13.15, stdev= 3.15
    bw (KiB/s) : min=    0, max=248128, per=97.84%, avg=163016.32, stdev=42357.08
  write: io=1,024MiB, bw=50,650KiB/s, iops=3,165, runt= 20702msec
    clat (usec): min=2, max=203K, avg=20.21, stdev=791.29
    bw (KiB/s) : min=    0, max=53408, per=97.62%, avg=49445.33, stdev=8540.84
  cpu          : usr=6.45%, sys=0.70%, ctx=8977, majf=0, minf=1114164
  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 r/w: total=258465/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.07%, 20=83.79%, 50=3.12%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 250=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=240MiB/s, minb=240MiB/s, maxb=240MiB/s, mint=17096msec, maxt=17096msec
  WRITE: io=4,096MiB, aggrb=22,766KiB/s, minb=22,766KiB/s, maxb=22,766KiB/s, mint=184230msec, maxt=184230msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=163MiB/s, minb=163MiB/s, maxb=163MiB/s, mint=24821msec, maxt=24821msec
  WRITE: io=1,024MiB, aggrb=50,652KiB/s, minb=50,652KiB/s, maxb=50,652KiB/s, mint=20702msec, maxt=20702msec

Disk stats (read/write):
  sda: ios=16920/65968, merge=522/1230567, ticks=227562/119400198, in_queue=119627687, util=93.25%
66.80user 33.79system 11:21.28elapsed 14%CPU (0avgtext+0avgdata 16861664maxresident)k
8390856inputs+18762416outputs (8major+3220359minor)pagefaults 0swaps