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=693
  read : io=4,096MiB, bw=228MiB/s, iops=14,567, runt= 17995msec
    clat (usec): min=13, max=175, avg=16.27, stdev= 2.60
    bw (KiB/s) : min=    0, max=240064, per=97.15%, avg=226453.33, stdev=39382.29
  write: io=4,096MiB, bw=20,460KiB/s, iops=1,278, runt=204997msec
    clat (usec): min=17, max=598K, avg=551.74, stdev=6504.81
    bw (KiB/s) : min=    0, max=78464, per=101.67%, avg=20800.93, stdev=14094.34
  cpu          : usr=31.23%, sys=5.62%, ctx=104148, majf=1, minf=2102340
  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=47.45%, 50=46.62%, 100=2.59%, 250=1.73%, 500=0.25%
     lat (usec): 750=0.13%, 1000=0.14%
     lat (msec): 2=0.18%, 4=0.13%, 10=0.26%, 20=0.21%, 50=0.16%
     lat (msec): 100=0.10%, 250=0.05%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=807
  read : io=4,038MiB, bw=150MiB/s, iops=9,605, runt= 26906msec
    clat (usec): min=2, max=247, avg=19.35, stdev= 6.68
    bw (KiB/s) : min=    0, max=235296, per=98.03%, avg=150660.15, stdev=36818.71
  write: io=1,024MiB, bw=47,027KiB/s, iops=2,939, runt= 22297msec
    clat (usec): min=2, max=258, avg=23.94, stdev= 6.18
    bw (KiB/s) : min=    0, max=50880, per=97.77%, avg=45977.82, stdev=8071.67
  cpu          : usr=6.33%, sys=1.21%, ctx=2025, majf=0, minf=1114653
  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=258446/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.42%, 20=35.00%, 50=59.52%, 100=0.04%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=228MiB/s, minb=228MiB/s, maxb=228MiB/s, mint=17995msec, maxt=17995msec
  WRITE: io=4,096MiB, aggrb=20,460KiB/s, minb=20,460KiB/s, maxb=20,460KiB/s, mint=204997msec, maxt=204997msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=150MiB/s, minb=150MiB/s, maxb=150MiB/s, mint=26906msec, maxt=26906msec
  WRITE: io=1,024MiB, aggrb=47,027KiB/s, minb=47,027KiB/s, maxb=47,027KiB/s, mint=22297msec, maxt=22297msec

Disk stats (read/write):
  sda: ios=16657/69138, merge=784/1227440, ticks=249542/133087239, in_queue=133336667, util=93.32%
105.54user 48.60system 13:07.38elapsed 19%CPU (0avgtext+0avgdata 16861248maxresident)k
8390400inputs+18762960outputs (7major+3221101minor)pagefaults 0swaps