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=8970
  read : io=4,096MiB, bw=230MiB/s, iops=14,727, runt= 17800msec
    clat (usec): min=11, max=232, avg=15.67, stdev= 2.20
    bw (KiB/s) : min=    0, max=248608, per=97.23%, avg=229103.11, stdev=39740.04
  write: io=4,096MiB, bw=19,976KiB/s, iops=1,248, runt=209967msec
    clat (usec): min=15, max=986K, avg=569.44, stdev=8165.51
    bw (KiB/s) : min=    0, max=79392, per=103.81%, avg=20737.61, stdev=16022.71
  cpu          : usr=32.09%, sys=5.12%, ctx=56538, 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=49.64%, 50=45.70%, 100=1.30%, 250=1.53%, 500=0.36%
     lat (usec): 750=0.12%, 1000=0.15%
     lat (msec): 2=0.20%, 4=0.13%, 10=0.30%, 20=0.26%, 50=0.19%
     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=9248
  read : io=4,037MiB, bw=158MiB/s, iops=10,124, runt= 25519msec
    clat (usec): min=2, max=157, avg=16.03, stdev= 3.57
    bw (KiB/s) : min=    0, max=246432, per=97.74%, avg=158339.76, stdev=39315.56
  write: io=1,024MiB, bw=49,159KiB/s, iops=3,072, runt= 21330msec
    clat (usec): min=6, max=250, avg=20.49, stdev= 3.92
    bw (KiB/s) : min=    0, max=51968, per=97.50%, avg=47933.77, stdev=7713.70
  cpu          : usr=6.66%, sys=0.89%, ctx=901, majf=0, minf=1114515
  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=258372/65536, short=0/0
     lat (usec): 4=0.01%, 10=3.38%, 20=75.45%, 50=21.15%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17800msec, maxt=17800msec
  WRITE: io=4,096MiB, aggrb=19,976KiB/s, minb=19,976KiB/s, maxb=19,976KiB/s, mint=209967msec, maxt=209967msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=158MiB/s, minb=158MiB/s, maxb=158MiB/s, mint=25519msec, maxt=25519msec
  WRITE: io=1,024MiB, aggrb=49,161KiB/s, minb=49,161KiB/s, maxb=49,161KiB/s, mint=21330msec, maxt=21330msec

Disk stats (read/write):
  sda: ios=17211/63885, merge=230/1232433, ticks=239415/126828179, in_queue=127067464, util=93.29%
105.76user 53.45system 11:47.99elapsed 22%CPU (0avgtext+0avgdata 16861712maxresident)k
8390352inputs+18760504outputs (7major+3220826minor)pagefaults 0swaps