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=11395
  read : io=4,096MiB, bw=235MiB/s, iops=15,066, runt= 17399msec
    clat (usec): min=11, max=108, avg=14.28, stdev= 1.92
    bw (KiB/s) : min=    0, max=248448, per=97.19%, avg=234302.17, stdev=41183.42
  write: io=4,096MiB, bw=19,242KiB/s, iops=1,202, runt=217974msec
    clat (usec): min=14, max=396K, avg=734.44, stdev=7302.39
    bw (KiB/s) : min=    0, max=66624, per=102.33%, avg=19690.94, stdev=17311.02
  cpu          : usr=18.33%, sys=2.50%, ctx=18740, majf=0, minf=2102313
  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=65.39%, 50=31.22%, 100=0.02%, 250=0.09%, 500=0.03%
     lat (usec): 750=0.09%, 1000=0.03%
     lat (msec): 2=1.01%, 4=1.38%, 10=0.23%, 20=0.14%, 50=0.14%
     lat (msec): 100=0.15%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=11608
  read : io=4,039MiB, bw=38,506KiB/s, iops=2,406, runt=107402msec
    clat (usec): min=2, max=429, avg=16.14, stdev= 4.52
    bw (KiB/s) : min=    0, max=237440, per=227.82%, avg=87726.49, stdev=80805.57
  write: io=1,024MiB, bw=10,175KiB/s, iops=635, runt=103047msec
    clat (usec): min=3, max=4,001K, avg=1265.57, stdev=53607.62
    bw (KiB/s) : min=    0, max=50624, per=235.22%, avg=23933.96, stdev=22854.53
  cpu          : usr=7.38%, sys=1.32%, ctx=1610, majf=0, minf=1122362
  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=258482/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.24%, 20=59.61%, 50=27.08%, 100=0.03%
     lat (usec): 250=0.01%, 500=0.01%, 1000=0.01%
     lat (msec): 2=0.01%, 250=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=235MiB/s, minb=235MiB/s, maxb=235MiB/s, mint=17399msec, maxt=17399msec
  WRITE: io=4,096MiB, aggrb=19,242KiB/s, minb=19,242KiB/s, maxb=19,242KiB/s, mint=217974msec, maxt=217974msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=38,507KiB/s, minb=38,507KiB/s, maxb=38,507KiB/s, mint=107402msec, maxt=107402msec
  WRITE: io=1,024MiB, aggrb=10,175KiB/s, minb=10,175KiB/s, maxb=10,175KiB/s, mint=103047msec, maxt=103047msec

Disk stats (read/write):
  sda: ios=18423/62776, merge=14373/1235972, ticks=252767/52708570, in_queue=52961324, util=93.92%
67.38user 33.32system 10:57.43elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
8390656inputs+18824392outputs (32major+3228417minor)pagefaults 0swaps