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=8658
  read : io=4,096MiB, bw=231MiB/s, iops=14,766, runt= 17753msec
    clat (usec): min=10, max=126, avg=15.59, stdev= 2.00
    bw (KiB/s) : min=    0, max=250176, per=97.25%, avg=229752.89, stdev=39718.92
  write: io=4,096MiB, bw=20,752KiB/s, iops=1,297, runt=202109msec
    clat (usec): min=13, max=872K, avg=541.31, stdev=6798.57
    bw (KiB/s) : min=    0, max=79552, per=102.38%, avg=21246.65, stdev=14487.84
  cpu          : usr=31.67%, sys=4.28%, ctx=74254, majf=1, minf=2102342
  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=50.08%, 50=46.36%, 100=0.27%, 250=1.85%, 500=0.12%
     lat (usec): 750=0.09%, 1000=0.14%
     lat (msec): 2=0.18%, 4=0.12%, 10=0.28%, 20=0.21%, 50=0.15%
     lat (msec): 100=0.10%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=8745
  read : io=4,037MiB, bw=162MiB/s, iops=10,345, runt= 24975msec
    clat (usec): min=2, max=238, avg=13.73, stdev= 3.52
    bw (KiB/s) : min=    0, max=245504, per=97.68%, avg=161692.80, stdev=39966.84
  write: io=1,024MiB, bw=50,560KiB/s, iops=3,160, runt= 20739msec
    clat (usec): min=2, max=161, avg=17.11, stdev= 3.82
    bw (KiB/s) : min=    0, max=53024, per=97.65%, avg=49376.00, stdev=8505.79
  cpu          : usr=6.27%, sys=0.90%, ctx=4022, majf=0, minf=1113649
  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=11.97%, 20=83.14%, 50=4.87%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=231MiB/s, minb=231MiB/s, maxb=231MiB/s, mint=17753msec, maxt=17753msec
  WRITE: io=4,096MiB, aggrb=20,752KiB/s, minb=20,752KiB/s, maxb=20,752KiB/s, mint=202109msec, maxt=202109msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=162MiB/s, minb=162MiB/s, maxb=162MiB/s, mint=24975msec, maxt=24975msec
  WRITE: io=1,024MiB, aggrb=50,562KiB/s, minb=50,562KiB/s, maxb=50,562KiB/s, mint=20739msec, maxt=20739msec

Disk stats (read/write):
  sda: ios=16639/64631, merge=801/1231733, ticks=244900/131494344, in_queue=131739130, util=93.55%
104.88user 44.19system 12:53.77elapsed 19%CPU (0avgtext+0avgdata 16861360maxresident)k
8390776inputs+18761176outputs (9major+3220061minor)pagefaults 0swaps