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=32349
  read : io=4,096MiB, bw=224MiB/s, iops=14,319, runt= 18307msec
    clat (usec): min=13, max=118, avg=17.63, stdev= 2.31
    bw (KiB/s) : min=    0, max=238464, per=97.34%, avg=223028.76, stdev=38224.43
  write: io=4,096MiB, bw=20,225KiB/s, iops=1,264, runt=207373msec
    clat (usec): min=18, max=805K, avg=557.62, stdev=6857.80
    bw (KiB/s) : min=    0, max=83456, per=102.39%, avg=20707.48, stdev=14162.56
  cpu          : usr=31.48%, sys=5.54%, ctx=97868, majf=1, minf=2102344
  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=42.48%, 50=51.31%, 100=2.84%, 250=1.70%, 500=0.30%
     lat (usec): 750=0.13%, 1000=0.15%
     lat (msec): 2=0.18%, 4=0.13%, 10=0.27%, 20=0.20%, 50=0.16%
     lat (msec): 100=0.10%, 250=0.05%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=32435
  read : io=4,037MiB, bw=155MiB/s, iops=9,940, runt= 25989msec
    clat (usec): min=2, max=237, avg=16.22, stdev= 4.62
    bw (KiB/s) : min=    0, max=237280, per=98.41%, avg=156522.46, stdev=38773.27
  write: io=1,024MiB, bw=48,909KiB/s, iops=3,056, runt= 21439msec
    clat (usec): min=3, max=185, avg=20.27, stdev= 4.36
    bw (KiB/s) : min=    0, max=51968, per=97.94%, avg=47900.23, stdev=7826.20
  cpu          : usr=6.74%, sys=1.13%, ctx=13586, majf=0, minf=1113906
  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=258352/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.58%, 20=63.27%, 50=28.11%, 100=0.02%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=224MiB/s, minb=224MiB/s, maxb=224MiB/s, mint=18307msec, maxt=18307msec
  WRITE: io=4,096MiB, aggrb=20,225KiB/s, minb=20,225KiB/s, maxb=20,225KiB/s, mint=207373msec, maxt=207373msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=155MiB/s, minb=155MiB/s, maxb=155MiB/s, mint=25989msec, maxt=25989msec
  WRITE: io=1,024MiB, aggrb=48,910KiB/s, minb=48,910KiB/s, maxb=48,910KiB/s, mint=21439msec, maxt=21439msec

Disk stats (read/write):
  sda: ios=16668/77480, merge=773/1218820, ticks=255735/123110992, in_queue=123366585, util=93.17%
106.63user 49.96system 12:41.44elapsed 20%CPU (0avgtext+0avgdata 16861584maxresident)k
8390928inputs+18760496outputs (8major+3220268minor)pagefaults 0swaps