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=9118
  read : io=4,096MiB, bw=237MiB/s, iops=15,143, runt= 17311msec
    clat (usec): min=11, max=229, avg=13.74, stdev= 2.20
    bw (KiB/s) : min=    0, max=246496, per=97.13%, avg=235342.63, stdev=41306.09
  write: io=4,096MiB, bw=19,718KiB/s, iops=1,232, runt=212713msec
    clat (usec): min=14, max=1,024K, avg=614.59, stdev=10676.28
    bw (KiB/s) : min=    0, max=81760, per=107.52%, avg=21201.34, stdev=22466.08
  cpu          : usr=29.90%, sys=3.98%, ctx=48473, 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=52.14%, 50=44.05%, 100=0.54%, 250=1.30%, 500=0.40%
     lat (usec): 750=0.25%, 1000=0.31%
     lat (msec): 2=0.45%, 4=0.08%, 10=0.14%, 20=0.11%, 50=0.07%
     lat (msec): 100=0.08%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=9381
  read : io=4,037MiB, bw=159MiB/s, iops=10,178, runt= 25386msec
    clat (usec): min=2, max=246, avg=15.51, stdev= 3.66
    bw (KiB/s) : min=    0, max=246112, per=97.88%, avg=159406.43, stdev=41734.36
  write: io=1,024MiB, bw=49,323KiB/s, iops=3,082, runt= 21259msec
    clat (usec): min=2, max=138, avg=20.76, stdev= 3.75
    bw (KiB/s) : min=    0, max=51872, per=97.70%, avg=48187.51, stdev=7703.53
  cpu          : usr=7.82%, sys=1.27%, ctx=33104, majf=0, minf=1114353
  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=258384/65536, short=0/0
     lat (usec): 4=0.01%, 10=3.17%, 20=75.54%, 50=21.28%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=237MiB/s, minb=237MiB/s, maxb=237MiB/s, mint=17311msec, maxt=17311msec
  WRITE: io=4,096MiB, aggrb=19,718KiB/s, minb=19,718KiB/s, maxb=19,718KiB/s, mint=212713msec, maxt=212713msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25386msec, maxt=25386msec
  WRITE: io=1,024MiB, aggrb=49,324KiB/s, minb=49,324KiB/s, maxb=49,324KiB/s, mint=21259msec, maxt=21259msec

Disk stats (read/write):
  sda: ios=16740/74510, merge=701/1221724, ticks=263924/97394114, in_queue=97657910, util=92.35%
95.93user 54.86system 11:32.77elapsed 21%CPU (0avgtext+0avgdata 16861296maxresident)k
8390640inputs+18759816outputs (8major+3220403minor)pagefaults 0swaps