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=11383
  read : io=4,096MiB, bw=230MiB/s, iops=14,741, runt= 17783msec
    clat (usec): min=11, max=103, avg=15.63, stdev= 2.12
    bw (KiB/s) : min=    0, max=247200, per=97.25%, avg=229381.33, stdev=39785.83
  write: io=4,096MiB, bw=19,372KiB/s, iops=1,210, runt=216510msec
    clat (usec): min=13, max=420K, avg=607.28, stdev=7308.48
    bw (KiB/s) : min=    0, max=79264, per=102.01%, avg=19761.95, stdev=16706.34
  cpu          : usr=30.94%, sys=3.99%, ctx=85758, 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=50.60%, 50=45.95%, 100=0.18%, 250=1.50%, 500=0.30%
     lat (usec): 750=0.19%, 1000=0.21%
     lat (msec): 2=0.28%, 4=0.10%, 10=0.22%, 20=0.16%, 50=0.11%
     lat (msec): 100=0.11%, 250=0.08%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=11493
  read : io=4,039MiB, bw=161MiB/s, iops=10,335, runt= 25008msec
    clat (usec): min=2, max=235, avg=14.42, stdev= 3.40
    bw (KiB/s) : min=    0, max=248288, per=98.03%, avg=162109.44, stdev=42532.65
  write: io=1,024MiB, bw=50,022KiB/s, iops=3,126, runt= 20962msec
    clat (usec): min=3, max=104, avg=18.84, stdev= 3.54
    bw (KiB/s) : min=    0, max=52640, per=97.50%, avg=48771.81, stdev=8234.87
  cpu          : usr=7.79%, sys=1.16%, ctx=49466, majf=0, minf=1115027
  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=258467/65536, short=0/0
     lat (usec): 4=0.01%, 10=3.51%, 20=84.13%, 50=12.34%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17783msec, maxt=17783msec
  WRITE: io=4,096MiB, aggrb=19,372KiB/s, minb=19,372KiB/s, maxb=19,372KiB/s, mint=216510msec, maxt=216510msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=161MiB/s, minb=161MiB/s, maxb=161MiB/s, mint=25008msec, maxt=25008msec
  WRITE: io=1,024MiB, aggrb=50,022KiB/s, minb=50,022KiB/s, maxb=50,022KiB/s, mint=20962msec, maxt=20962msec

Disk stats (read/write):
  sda: ios=16490/72155, merge=950/1224476, ticks=272341/98370178, in_queue=98642397, util=92.66%
102.68user 57.06system 11:47.83elapsed 22%CPU (0avgtext+0avgdata 16861104maxresident)k
8390392inputs+18799856outputs (7major+3221132minor)pagefaults 0swaps