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=23039
  read : io=4,096MiB, bw=220MiB/s, iops=14,093, runt= 18601msec
    clat (usec): min=13, max=107, avg=18.70, stdev= 2.14
    bw (KiB/s) : min=    0, max=237152, per=97.38%, avg=219587.37, stdev=36948.12
  write: io=4,096MiB, bw=20,374KiB/s, iops=1,273, runt=205860msec
    clat (usec): min=17, max=724K, avg=553.27, stdev=6921.59
    bw (KiB/s) : min=    0, max=81376, per=101.88%, avg=20756.89, stdev=14134.82
  cpu          : usr=31.45%, sys=5.65%, ctx=103925, majf=1, minf=2102341
  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=28.48%, 50=65.86%, 100=2.32%, 250=1.52%, 500=0.44%
     lat (usec): 750=0.13%, 1000=0.14%
     lat (msec): 2=0.20%, 4=0.14%, 10=0.26%, 20=0.21%, 50=0.16%
     lat (msec): 100=0.09%, 250=0.04%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=23155
  read : io=4,038MiB, bw=153MiB/s, iops=9,806, runt= 26355msec
    clat (usec): min=2, max=240, avg=18.19, stdev= 4.32
    bw (KiB/s) : min=    0, max=228448, per=97.47%, avg=152934.15, stdev=36688.68
  write: io=1,024MiB, bw=47,823KiB/s, iops=2,988, runt= 21926msec
    clat (usec): min=3, max=245, avg=23.01, stdev= 4.45
    bw (KiB/s) : min=    0, max=51456, per=97.61%, avg=46679.18, stdev=7614.03
  cpu          : usr=6.55%, sys=1.15%, ctx=8052, majf=0, minf=1114777
  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=258439/65536, short=0/0
     lat (usec): 4=0.01%, 10=3.91%, 20=32.43%, 50=63.63%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=220MiB/s, minb=220MiB/s, maxb=220MiB/s, mint=18601msec, maxt=18601msec
  WRITE: io=4,096MiB, aggrb=20,374KiB/s, minb=20,374KiB/s, maxb=20,374KiB/s, mint=205860msec, maxt=205860msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=153MiB/s, minb=153MiB/s, maxb=153MiB/s, mint=26355msec, maxt=26355msec
  WRITE: io=1,024MiB, aggrb=47,823KiB/s, minb=47,823KiB/s, maxb=47,823KiB/s, mint=21926msec, maxt=21926msec

Disk stats (read/write):
  sda: ios=16682/70120, merge=759/1226334, ticks=252479/128099817, in_queue=128352174, util=93.19%
106.46user 49.89system 12:52.70elapsed 20%CPU (0avgtext+0avgdata 16861360maxresident)k
8390384inputs+18761864outputs (7major+3221185minor)pagefaults 0swaps