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=26475
  read : io=4,096MiB, bw=219MiB/s, iops=13,997, runt= 18728msec
    clat (usec): min=13, max=230, avg=18.92, stdev= 2.17
    bw (KiB/s) : min=    0, max=236992, per=97.38%, avg=218089.26, stdev=37049.45
  write: io=4,096MiB, bw=20,214KiB/s, iops=1,263, runt=207488msec
    clat (usec): min=15, max=478K, avg=563.79, stdev=6339.58
    bw (KiB/s) : min=    0, max=84704, per=101.40%, avg=20497.48, stdev=13927.28
  cpu          : usr=30.87%, sys=5.33%, ctx=80873, majf=1, minf=2102343
  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=31.65%, 50=62.81%, 100=2.23%, 250=1.77%, 500=0.17%
     lat (usec): 750=0.11%, 1000=0.15%
     lat (msec): 2=0.18%, 4=0.13%, 10=0.28%, 20=0.19%, 50=0.19%
     lat (msec): 100=0.12%, 250=0.04%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=26590
  read : io=4,038MiB, bw=153MiB/s, iops=9,803, runt= 26361msec
    clat (usec): min=2, max=237, avg=17.94, stdev= 4.75
    bw (KiB/s) : min=    0, max=236384, per=97.56%, avg=153034.87, stdev=39099.17
  write: io=1,024MiB, bw=47,528KiB/s, iops=2,970, runt= 22062msec
    clat (usec): min=2, max=240, avg=23.32, stdev= 4.52
    bw (KiB/s) : min=    0, max=52288, per=97.83%, avg=46496.00, stdev=7522.79
  cpu          : usr=7.11%, sys=1.40%, ctx=13582, majf=0, minf=1114629
  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=258431/65536, short=0/0
     lat (usec): 4=0.01%, 10=3.18%, 20=39.25%, 50=57.53%, 100=0.02%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=219MiB/s, minb=219MiB/s, maxb=219MiB/s, mint=18728msec, maxt=18728msec
  WRITE: io=4,096MiB, aggrb=20,214KiB/s, minb=20,214KiB/s, maxb=20,214KiB/s, mint=207488msec, maxt=207488msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=153MiB/s, minb=153MiB/s, maxb=153MiB/s, mint=26361msec, maxt=26361msec
  WRITE: io=1,024MiB, aggrb=47,529KiB/s, minb=47,529KiB/s, maxb=47,529KiB/s, mint=22062msec, maxt=22062msec

Disk stats (read/write):
  sda: ios=16659/62178, merge=782/1231237, ticks=253566/115707812, in_queue=115962469, util=92.90%
105.45user 47.10system 12:25.35elapsed 20%CPU (0avgtext+0avgdata 16861216maxresident)k
8390736inputs+18762656outputs (9major+3220930minor)pagefaults 0swaps