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=30269
  read : io=4,096MiB, bw=235MiB/s, iops=15,035, runt= 17435msec
    clat (usec): min=11, max=110, avg=14.37, stdev= 1.98
    bw (KiB/s) : min=    0, max=248288, per=97.19%, avg=233820.34, stdev=41099.07
  write: io=4,096MiB, bw=19,264KiB/s, iops=1,204, runt=217718msec
    clat (usec): min=15, max=351K, avg=734.16, stdev=7120.21
    bw (KiB/s) : min=    0, max=66427, per=102.34%, avg=19714.31, stdev=17230.92
  cpu          : usr=18.53%, sys=2.44%, ctx=18681, majf=0, minf=2102311
  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=65.63%, 50=30.95%, 100=0.02%, 250=0.11%, 500=0.03%
     lat (usec): 750=0.09%, 1000=0.03%
     lat (msec): 2=0.95%, 4=1.38%, 10=0.27%, 20=0.15%, 50=0.15%
     lat (msec): 100=0.16%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=30466
  read : io=4,037MiB, bw=36,798KiB/s, iops=2,299, runt=112349msec
    clat (usec): min=2, max=882, avg=16.61, stdev= 5.09
    bw (KiB/s) : min=    0, max=234752, per=238.81%, avg=87878.32, stdev=81115.21
  write: io=1,024MiB, bw=9,489KiB/s, iops=593, runt=110502msec
    clat (usec): min=3, max=3,910K, avg=1381.40, stdev=57667.74
    bw (KiB/s) : min=    0, max=50720, per=248.44%, avg=23574.85, stdev=23064.39
  cpu          : usr=7.24%, sys=1.34%, ctx=3028, majf=0, minf=1120503
  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=258390/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.21%, 20=51.19%, 50=35.54%, 100=0.03%
     lat (usec): 250=0.01%, 750=0.01%, 1000=0.01%
     lat (msec): 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=17435msec, maxt=17435msec
  WRITE: io=4,096MiB, aggrb=19,264KiB/s, minb=19,264KiB/s, maxb=19,264KiB/s, mint=217718msec, maxt=217718msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=36,798KiB/s, minb=36,798KiB/s, maxb=36,798KiB/s, mint=112349msec, maxt=112349msec
  WRITE: io=1,024MiB, aggrb=9,489KiB/s, minb=9,489KiB/s, maxb=9,489KiB/s, mint=110502msec, maxt=110502msec

Disk stats (read/write):
  sda: ios=18417/62648, merge=14377/1235648, ticks=250180/52743489, in_queue=52993660, util=93.93%
67.16user 33.99system 10:57.93elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
8390664inputs+18814792outputs (32major+3226565minor)pagefaults 0swaps