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=6806
  read : io=4,096MiB, bw=195MiB/s, iops=12,478, runt= 21007msec
    clat (usec): min=12, max=296, avg=18.31, stdev= 5.70
    bw (KiB/s) : min=    0, max=242432, per=97.68%, avg=195036.28, stdev=59269.73
  write: io=4,096MiB, bw=18,327KiB/s, iops=1,145, runt=228850msec
    clat (usec): min=17, max=647K, avg=654.84, stdev=7599.60
    bw (KiB/s) : min=    0, max=66528, per=102.91%, avg=18860.96, stdev=16264.56
  cpu          : usr=31.32%, sys=5.37%, ctx=16348, majf=0, minf=2102314
  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=44.04%, 50=48.93%, 100=3.65%, 250=0.35%, 500=1.27%
     lat (usec): 750=0.08%, 1000=0.15%
     lat (msec): 2=0.67%, 4=0.23%, 10=0.16%, 20=0.12%, 50=0.14%
     lat (msec): 100=0.14%, 250=0.07%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6919
  read : io=4,037MiB, bw=34,780KiB/s, iops=2,173, runt=118849msec
    clat (usec): min=2, max=642, avg=23.58, stdev=11.52
    bw (KiB/s) : min=    0, max=226144, per=227.86%, avg=79249.45, stdev=71108.75
  write: io=1,024MiB, bw=9,251KiB/s, iops=578, runt=113347msec
    clat (usec): min=2, max=3,021K, avg=1277.65, stdev=53561.08
    bw (KiB/s) : min=    0, max=49664, per=237.26%, avg=21948.79, stdev=20521.68
  cpu          : usr=10.04%, sys=2.41%, ctx=21985, majf=0, minf=1127447
  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=258349/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.04%, 20=35.20%, 50=55.58%, 100=5.11%
     lat (usec): 250=0.05%, 500=0.01%, 750=0.01%
     lat (msec): 750=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=195MiB/s, minb=195MiB/s, maxb=195MiB/s, mint=21007msec, maxt=21007msec
  WRITE: io=4,096MiB, aggrb=18,327KiB/s, minb=18,327KiB/s, maxb=18,327KiB/s, mint=228850msec, maxt=228850msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=34,780KiB/s, minb=34,780KiB/s, maxb=34,780KiB/s, mint=118849msec, maxt=118849msec
  WRITE: io=1,024MiB, aggrb=9,251KiB/s, minb=9,251KiB/s, maxb=9,251KiB/s, mint=113347msec, maxt=113347msec

Disk stats (read/write):
  sda: ios=18423/62982, merge=14373/1235802, ticks=248188/55362943, in_queue=55611072, util=92.66%
112.90user 70.41system 11:23.45elapsed 26%CPU (0avgtext+0avgdata 0maxresident)k
8390432inputs+18869200outputs (32major+3233617minor)pagefaults 0swaps