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=24858
  read : io=4,096MiB, bw=232MiB/s, iops=14,820, runt= 17688msec
    clat (usec): min=11, max=107, avg=15.28, stdev= 2.49
    bw (KiB/s) : min=    0, max=247104, per=97.26%, avg=230629.33, stdev=40219.42
  write: io=4,096MiB, bw=20,483KiB/s, iops=1,280, runt=204769msec
    clat (usec): min=14, max=816K, avg=551.81, stdev=8154.18
    bw (KiB/s) : min=    0, max=78944, per=104.05%, avg=21313.18, stdev=16574.21
  cpu          : usr=32.55%, sys=4.83%, ctx=28453, majf=1, minf=2102311
  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=45.75%, 100=0.82%, 250=1.67%, 500=0.30%
     lat (usec): 750=0.12%, 1000=0.13%
     lat (msec): 2=0.21%, 4=0.15%, 10=0.27%, 20=0.21%, 50=0.17%
     lat (msec): 100=0.08%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=24976
  read : io=4,037MiB, bw=155MiB/s, iops=9,901, runt= 26095msec
    clat (usec): min=2, max=121, avg=15.14, stdev= 3.72
    bw (KiB/s) : min=    0, max=245280, per=99.64%, avg=157858.82, stdev=42659.58
  write: io=1,024MiB, bw=47,873KiB/s, iops=2,992, runt= 21903msec
    clat (usec): min=6, max=816K, avg=31.92, stdev=3185.62
    bw (KiB/s) : min=    0, max=52448, per=99.75%, avg=47756.09, stdev=9383.86
  cpu          : usr=6.65%, sys=0.85%, ctx=3051, majf=0, minf=1114024
  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=258378/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.54%, 20=78.57%, 50=15.88%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 1000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=232MiB/s, minb=232MiB/s, maxb=232MiB/s, mint=17688msec, maxt=17688msec
  WRITE: io=4,096MiB, aggrb=20,483KiB/s, minb=20,483KiB/s, maxb=20,483KiB/s, mint=204769msec, maxt=204769msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=155MiB/s, minb=155MiB/s, maxb=155MiB/s, mint=26095msec, maxt=26095msec
  WRITE: io=1,024MiB, aggrb=47,875KiB/s, minb=47,875KiB/s, maxb=47,875KiB/s, mint=21903msec, maxt=21903msec

Disk stats (read/write):
  sda: ios=17178/62317, merge=263/1233922, ticks=229965/125907124, in_queue=126136948, util=93.24%
104.70user 51.46system 11:40.15elapsed 22%CPU (0avgtext+0avgdata 16861712maxresident)k
8390776inputs+18759896outputs (9major+3220300minor)pagefaults 0swaps