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=20195
  read : io=4,096MiB, bw=224MiB/s, iops=14,349, runt= 18269msec
    clat (usec): min=10, max=249, avg=14.74, stdev= 3.18
    bw (KiB/s) : min=    0, max=248352, per=97.65%, avg=224194.59, stdev=45383.76
  write: io=4,096MiB, bw=19,830KiB/s, iops=1,239, runt=211505msec
    clat (usec): min=14, max=874K, avg=596.61, stdev=9722.15
    bw (KiB/s) : min=    0, max=78432, per=105.51%, avg=20922.58, stdev=19814.13
  cpu          : usr=32.42%, sys=3.76%, ctx=12667, 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=49.42%, 50=46.73%, 100=0.59%, 250=1.62%, 500=0.29%
     lat (usec): 750=0.20%, 1000=0.27%
     lat (msec): 2=0.32%, 4=0.06%, 10=0.14%, 20=0.11%, 50=0.08%
     lat (msec): 100=0.09%, 250=0.07%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=20477
  read : io=4,037MiB, bw=156MiB/s, iops=9,994, runt= 25854msec
    clat (usec): min=2, max=610, avg=15.49, stdev= 4.93
    bw (KiB/s) : min=    0, max=245088, per=97.47%, avg=155862.77, stdev=39468.13
  write: io=1,024MiB, bw=48,666KiB/s, iops=3,041, runt= 21546msec
    clat (usec): min=3, max=814, avg=20.43, stdev= 6.04
    bw (KiB/s) : min=    0, max=51392, per=97.77%, avg=47583.27, stdev=7793.87
  cpu          : usr=7.05%, sys=1.02%, ctx=25653, majf=0, minf=1113907
  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=258392/65536, short=0/0
     lat (usec): 4=0.01%, 10=6.85%, 20=70.79%, 50=22.29%, 100=0.04%
     lat (usec): 250=0.02%, 500=0.01%, 750=0.01%, 1000=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=224MiB/s, minb=224MiB/s, maxb=224MiB/s, mint=18269msec, maxt=18269msec
  WRITE: io=4,096MiB, aggrb=19,830KiB/s, minb=19,830KiB/s, maxb=19,830KiB/s, mint=211505msec, maxt=211505msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=156MiB/s, minb=156MiB/s, maxb=156MiB/s, mint=25854msec, maxt=25854msec
  WRITE: io=1,024MiB, aggrb=48,667KiB/s, minb=48,667KiB/s, maxb=48,667KiB/s, mint=21546msec, maxt=21546msec

Disk stats (read/write):
  sda: ios=16638/63650, merge=804/1232713, ticks=245198/109524305, in_queue=109769415, util=92.64%
100.89user 47.65system 11:15.06elapsed 22%CPU (0avgtext+0avgdata 16861280maxresident)k
8390648inputs+18760624outputs (8major+3220082minor)pagefaults 0swaps