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=26605
  read : io=4,096MiB, bw=226MiB/s, iops=14,455, runt= 18135msec
    clat (usec): min=13, max=229, avg=16.76, stdev= 2.67
    bw (KiB/s) : min=    0, max=236992, per=97.29%, avg=225023.14, stdev=38549.84
  write: io=4,096MiB, bw=20,171KiB/s, iops=1,260, runt=207929msec
    clat (usec): min=17, max=511K, avg=558.22, stdev=6448.46
    bw (KiB/s) : min=    0, max=79136, per=101.26%, avg=20425.02, stdev=12957.05
  cpu          : usr=31.43%, sys=5.42%, ctx=122416, 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=40.70%, 50=53.55%, 100=2.43%, 250=1.96%, 500=0.13%
     lat (usec): 750=0.08%, 1000=0.11%
     lat (msec): 2=0.13%, 4=0.11%, 10=0.27%, 20=0.19%, 50=0.17%
     lat (msec): 100=0.12%, 250=0.04%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=26694
  read : io=4,036MiB, bw=151MiB/s, iops=9,685, runt= 26670msec
    clat (usec): min=2, max=249, avg=17.00, stdev= 5.88
    bw (KiB/s) : min=    0, max=236160, per=97.22%, avg=150651.77, stdev=37569.63
  write: io=1,024MiB, bw=49,449KiB/s, iops=3,090, runt= 21205msec
    clat (usec): min=3, max=234, avg=20.87, stdev= 4.36
    bw (KiB/s) : min=    0, max=52608, per=97.71%, avg=48319.95, stdev=7635.66
  cpu          : usr=7.29%, sys=1.45%, ctx=12852, majf=0, minf=1113009
  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=258302/65536, short=0/0
     lat (usec): 4=0.01%, 10=9.56%, 20=54.87%, 50=35.54%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=226MiB/s, minb=226MiB/s, maxb=226MiB/s, mint=18135msec, maxt=18135msec
  WRITE: io=4,096MiB, aggrb=20,171KiB/s, minb=20,171KiB/s, maxb=20,171KiB/s, mint=207929msec, maxt=207929msec

Run status group 1 (all jobs):
   READ: io=4,036MiB, aggrb=151MiB/s, minb=151MiB/s, maxb=151MiB/s, mint=26670msec, maxt=26670msec
  WRITE: io=1,024MiB, aggrb=49,451KiB/s, minb=49,451KiB/s, maxb=49,451KiB/s, mint=21205msec, maxt=21205msec

Disk stats (read/write):
  sda: ios=16675/62318, merge=765/1225860, ticks=247590/112855899, in_queue=113104945, util=92.73%
107.26user 49.49system 12:23.79elapsed 21%CPU (0avgtext+0avgdata 16861632maxresident)k
8390776inputs+18758056outputs (9major+3219290minor)pagefaults 0swaps