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=11654
  read : io=4,096MiB, bw=233MiB/s, iops=14,936, runt= 17551msec
    clat (usec): min=11, max=102, avg=14.82, stdev= 2.21
    bw (KiB/s) : min=    0, max=248800, per=97.24%, avg=232376.00, stdev=40392.92
  write: io=4,096MiB, bw=19,258KiB/s, iops=1,203, runt=217793msec
    clat (usec): min=14, max=667K, avg=607.37, stdev=7434.93
    bw (KiB/s) : min=    0, max=85248, per=102.24%, avg=19688.55, stdev=15869.61
  cpu          : usr=31.52%, sys=4.26%, ctx=84650, 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=50.13%, 50=46.08%, 100=0.51%, 250=1.57%, 500=0.33%
     lat (usec): 750=0.18%, 1000=0.19%
     lat (msec): 2=0.26%, 4=0.10%, 10=0.22%, 20=0.16%, 50=0.10%
     lat (msec): 100=0.11%, 250=0.08%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=11767
  read : io=4,037MiB, bw=159MiB/s, iops=10,195, runt= 25342msec
    clat (usec): min=2, max=201, avg=14.10, stdev= 3.84
    bw (KiB/s) : min=    0, max=248032, per=97.85%, avg=159622.90, stdev=43062.14
  write: io=1,024MiB, bw=49,470KiB/s, iops=3,091, runt= 21196msec
    clat (usec): min=3, max=198, avg=18.13, stdev= 4.64
    bw (KiB/s) : min=    0, max=52640, per=97.59%, avg=48280.56, stdev=9516.83
  cpu          : usr=6.57%, sys=0.92%, ctx=11471, majf=0, minf=1114199
  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=258365/65536, short=0/0
     lat (usec): 4=0.01%, 10=9.01%, 20=81.49%, 50=9.47%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=233MiB/s, minb=233MiB/s, maxb=233MiB/s, mint=17551msec, maxt=17551msec
  WRITE: io=4,096MiB, aggrb=19,258KiB/s, minb=19,258KiB/s, maxb=19,258KiB/s, mint=217793msec, maxt=217793msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25342msec, maxt=25342msec
  WRITE: io=1,024MiB, aggrb=49,472KiB/s, minb=49,472KiB/s, maxb=49,472KiB/s, mint=21196msec, maxt=21196msec

Disk stats (read/write):
  sda: ios=16492/71513, merge=949/1224772, ticks=270954/125469483, in_queue=125740345, util=93.25%
103.81user 45.92system 12:42.90elapsed 19%CPU (0avgtext+0avgdata 16861104maxresident)k
8390840inputs+18760200outputs (8major+3220525minor)pagefaults 0swaps