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=6774
  read : io=4,096MiB, bw=236MiB/s, iops=15,087, runt= 17375msec
    clat (usec): min=11, max=111, avg=14.18, stdev= 2.00
    bw (KiB/s) : min=    0, max=249024, per=97.20%, avg=234633.14, stdev=41265.74
  write: io=4,096MiB, bw=18,951KiB/s, iops=1,184, runt=221318msec
    clat (usec): min=15, max=388K, avg=747.43, stdev=7340.12
    bw (KiB/s) : min=    0, max=66400, per=102.20%, avg=19367.02, stdev=17096.40
  cpu          : usr=18.24%, sys=2.57%, ctx=18581, majf=0, minf=2102321
  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=66.36%, 50=30.24%, 100=0.01%, 250=0.11%, 500=0.03%
     lat (usec): 750=0.09%, 1000=0.03%
     lat (msec): 2=0.97%, 4=1.38%, 10=0.25%, 20=0.14%, 50=0.16%
     lat (msec): 100=0.17%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6950
  read : io=4,037MiB, bw=37,309KiB/s, iops=2,331, runt=110801msec
    clat (usec): min=2, max=426, avg=16.46, stdev= 4.95
    bw (KiB/s) : min=    0, max=235200, per=234.73%, avg=87576.62, stdev=80714.39
  write: io=1,024MiB, bw=9,855KiB/s, iops=615, runt=106393msec
    clat (usec): min=3, max=3,769K, avg=1319.83, stdev=55856.37
    bw (KiB/s) : min=    0, max=51520, per=243.97%, avg=24043.36, stdev=23181.39
  cpu          : usr=7.58%, sys=1.37%, ctx=1636, majf=0, minf=1123720
  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=258373/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.21%, 20=49.75%, 50=36.97%, 100=0.03%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 100=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=236MiB/s, minb=236MiB/s, maxb=236MiB/s, mint=17375msec, maxt=17375msec
  WRITE: io=4,096MiB, aggrb=18,951KiB/s, minb=18,951KiB/s, maxb=18,951KiB/s, mint=221318msec, maxt=221318msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=37,309KiB/s, minb=37,309KiB/s, maxb=37,309KiB/s, mint=110801msec, maxt=110801msec
  WRITE: io=1,024MiB, aggrb=9,855KiB/s, minb=9,855KiB/s, maxb=9,855KiB/s, mint=106393msec, maxt=106393msec

Disk stats (read/write):
  sda: ios=18429/62386, merge=14367/1235866, ticks=254944/51266443, in_queue=51521374, util=93.84%
67.14user 33.40system 10:46.73elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
8390672inputs+18838152outputs (32major+3229747minor)pagefaults 0swaps