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=20285
  read : io=4,096MiB, bw=227MiB/s, iops=14,536, runt= 18033msec
    clat (usec): min=11, max=109, avg=16.64, stdev= 1.86
    bw (KiB/s) : min=    0, max=246272, per=97.29%, avg=226304.00, stdev=38442.74
  write: io=4,096MiB, bw=19,048KiB/s, iops=1,190, runt=220192msec
    clat (usec): min=14, max=894K, avg=632.65, stdev=10493.72
    bw (KiB/s) : min=    0, max=81696, per=107.41%, avg=20459.62, stdev=21025.20
  cpu          : usr=30.93%, sys=3.54%, ctx=33038, 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=50.76%, 50=45.54%, 100=0.44%, 250=1.47%, 500=0.33%
     lat (usec): 750=0.21%, 1000=0.29%
     lat (msec): 2=0.37%, 4=0.08%, 10=0.16%, 20=0.12%, 50=0.08%
     lat (msec): 100=0.08%, 250=0.07%, 500=0.02%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=20561
  read : io=4,037MiB, bw=159MiB/s, iops=10,197, runt= 25337msec
    clat (usec): min=2, max=251, avg=13.37, stdev= 3.86
    bw (KiB/s) : min=    0, max=245632, per=97.97%, avg=159851.92, stdev=46454.06
  write: io=1,024MiB, bw=49,182KiB/s, iops=3,073, runt= 21320msec
    clat (usec): min=2, max=141, avg=17.80, stdev= 4.77
    bw (KiB/s) : min=    0, max=53056, per=97.26%, avg=47836.19, stdev=10465.53
  cpu          : usr=7.06%, sys=1.02%, ctx=22108, majf=0, minf=1114359
  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=258371/65536, short=0/0
     lat (usec): 4=0.01%, 10=12.17%, 20=81.77%, 50=6.02%, 100=0.02%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=227MiB/s, minb=227MiB/s, maxb=227MiB/s, mint=18033msec, maxt=18033msec
  WRITE: io=4,096MiB, aggrb=19,048KiB/s, minb=19,048KiB/s, maxb=19,048KiB/s, mint=220192msec, maxt=220192msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25337msec, maxt=25337msec
  WRITE: io=1,024MiB, aggrb=49,184KiB/s, minb=49,184KiB/s, maxb=49,184KiB/s, mint=21320msec, maxt=21320msec

Disk stats (read/write):
  sda: ios=16689/63641, merge=752/1232611, ticks=271132/106309093, in_queue=106580132, util=92.64%
99.67user 51.68system 12:08.99elapsed 20%CPU (0avgtext+0avgdata 16861280maxresident)k
8390776inputs+18759960outputs (9major+3220557minor)pagefaults 0swaps