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=30292
  read : io=4,096MiB, bw=227MiB/s, iops=14,503, runt= 18074msec
    clat (usec): min=13, max=235, avg=16.35, stdev= 2.80
    bw (KiB/s) : min=    0, max=239872, per=97.29%, avg=225790.27, stdev=38989.32
  write: io=4,096MiB, bw=20,206KiB/s, iops=1,262, runt=207577msec
    clat (usec): min=17, max=989K, avg=559.79, stdev=6815.10
    bw (KiB/s) : min=    0, max=78016, per=101.72%, avg=20554.42, stdev=13598.42
  cpu          : usr=31.23%, sys=5.63%, ctx=88293, 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=47.43%, 50=46.77%, 100=2.46%, 250=1.57%, 500=0.36%
     lat (usec): 750=0.11%, 1000=0.15%
     lat (msec): 2=0.21%, 4=0.14%, 10=0.27%, 20=0.21%, 50=0.17%
     lat (msec): 100=0.10%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=30378
  read : io=4,037MiB, bw=152MiB/s, iops=9,750, runt= 26496msec
    clat (usec): min=2, max=137, avg=18.42, stdev= 6.01
    bw (KiB/s) : min=    0, max=236160, per=97.31%, avg=151809.81, stdev=39467.62
  write: io=1,024MiB, bw=47,515KiB/s, iops=2,969, runt= 22068msec
    clat (usec): min=3, max=637, avg=24.25, stdev= 6.63
    bw (KiB/s) : min=    0, max=51680, per=97.83%, avg=46486.80, stdev=7864.37
  cpu          : usr=6.41%, sys=1.24%, ctx=3969, majf=0, minf=1113315
  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=258351/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.51%, 20=40.45%, 50=53.98%, 100=0.04%
     lat (usec): 250=0.01%, 750=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=227MiB/s, minb=227MiB/s, maxb=227MiB/s, mint=18074msec, maxt=18074msec
  WRITE: io=4,096MiB, aggrb=20,206KiB/s, minb=20,206KiB/s, maxb=20,206KiB/s, mint=207577msec, maxt=207577msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=152MiB/s, minb=152MiB/s, maxb=152MiB/s, mint=26496msec, maxt=26496msec
  WRITE: io=1,024MiB, aggrb=47,517KiB/s, minb=47,517KiB/s, maxb=47,517KiB/s, mint=22068msec, maxt=22068msec

Disk stats (read/write):
  sda: ios=16639/76178, merge=802/1220085, ticks=252134/131859930, in_queue=132111894, util=93.33%
105.92user 49.45system 12:59.78elapsed 19%CPU (0avgtext+0avgdata 16861344maxresident)k
8390840inputs+18760584outputs (8major+3219744minor)pagefaults 0swaps