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=5958
  read : io=4,096MiB, bw=239MiB/s, iops=15,321, runt= 17110msec
    clat (usec): min=10, max=224, avg=12.98, stdev= 2.23
    bw (KiB/s) : min=    0, max=249536, per=97.14%, avg=238139.43, stdev=41796.57
  write: io=4,096MiB, bw=19,051KiB/s, iops=1,190, runt=220158msec
    clat (usec): min=14, max=991K, avg=640.41, stdev=11669.72
    bw (KiB/s) : min=    0, max=82240, per=110.05%, avg=20965.75, stdev=22546.74
  cpu          : usr=30.20%, sys=3.35%, ctx=16977, 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=53.48%, 50=42.99%, 100=0.27%, 250=1.46%, 500=0.32%
     lat (usec): 750=0.22%, 1000=0.28%
     lat (msec): 2=0.43%, 4=0.08%, 10=0.14%, 20=0.11%, 50=0.07%
     lat (msec): 100=0.07%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6064
  read : io=4,037MiB, bw=163MiB/s, iops=10,417, runt= 24800msec
    clat (usec): min=2, max=228, avg=13.41, stdev= 3.37
    bw (KiB/s) : min=    0, max=246656, per=98.18%, avg=163658.88, stdev=40799.58
  write: io=1,024MiB, bw=50,602KiB/s, iops=3,162, runt= 20722msec
    clat (usec): min=2, max=252, avg=17.56, stdev= 3.67
    bw (KiB/s) : min=    0, max=52608, per=98.01%, avg=49593.14, stdev=7907.79
  cpu          : usr=6.76%, sys=0.95%, ctx=15302, majf=0, minf=1113599
  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=258365/65536, short=0/0
     lat (usec): 4=0.01%, 10=11.03%, 20=83.39%, 50=5.55%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=239MiB/s, minb=239MiB/s, maxb=239MiB/s, mint=17110msec, maxt=17110msec
  WRITE: io=4,096MiB, aggrb=19,051KiB/s, minb=19,051KiB/s, maxb=19,051KiB/s, mint=220158msec, maxt=220158msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=163MiB/s, minb=163MiB/s, maxb=163MiB/s, mint=24800msec, maxt=24800msec
  WRITE: io=1,024MiB, aggrb=50,602KiB/s, minb=50,602KiB/s, maxb=50,602KiB/s, mint=20722msec, maxt=20722msec

Disk stats (read/write):
  sda: ios=16759/63656, merge=682/1232589, ticks=264878/113839242, in_queue=114104007, util=92.82%
95.85user 51.46system 12:12.80elapsed 20%CPU (0avgtext+0avgdata 16861296maxresident)k
8389448inputs+18759640outputs (3major+3219812minor)pagefaults 0swaps