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=973
  read : io=4,096MiB, bw=222MiB/s, iops=14,219, runt= 18435msec
    clat (usec): min=13, max=110, avg=18.11, stdev= 2.32
    bw (KiB/s) : min=    0, max=237536, per=97.36%, avg=221511.78, stdev=37958.99
  write: io=4,096MiB, bw=20,188KiB/s, iops=1,261, runt=207753msec
    clat (usec): min=16, max=695K, avg=563.56, stdev=6444.66
    bw (KiB/s) : min=    0, max=78528, per=101.63%, avg=20516.68, stdev=13635.57
  cpu          : usr=30.99%, sys=5.44%, ctx=124987, 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=36.08%, 50=58.28%, 100=2.32%, 250=1.73%, 500=0.25%
     lat (usec): 750=0.12%, 1000=0.14%
     lat (msec): 2=0.17%, 4=0.12%, 10=0.26%, 20=0.20%, 50=0.18%
     lat (msec): 100=0.11%, 250=0.04%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=1070
  read : io=4,038MiB, bw=151MiB/s, iops=9,656, runt= 26762msec
    clat (usec): min=2, max=240, avg=20.04, stdev= 6.46
    bw (KiB/s) : min=    0, max=235648, per=98.02%, avg=151435.85, stdev=35275.53
  write: io=1,024MiB, bw=47,269KiB/s, iops=2,954, runt= 22183msec
    clat (usec): min=2, max=120, avg=24.06, stdev= 5.80
    bw (KiB/s) : min=    0, max=49728, per=97.52%, avg=46098.89, stdev=7398.59
  cpu          : usr=7.06%, sys=1.55%, ctx=15838, majf=0, minf=1114949
  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=258414/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.64%, 20=29.53%, 50=65.79%, 100=0.02%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=222MiB/s, minb=222MiB/s, maxb=222MiB/s, mint=18435msec, maxt=18435msec
  WRITE: io=4,096MiB, aggrb=20,188KiB/s, minb=20,188KiB/s, maxb=20,188KiB/s, mint=207753msec, maxt=207753msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=151MiB/s, minb=151MiB/s, maxb=151MiB/s, mint=26762msec, maxt=26762msec
  WRITE: io=1,024MiB, aggrb=47,270KiB/s, minb=47,270KiB/s, maxb=47,270KiB/s, mint=22183msec, maxt=22183msec

Disk stats (read/write):
  sda: ios=16680/62808, merge=762/1224079, ticks=250235/112341319, in_queue=112592989, util=92.90%
105.72user 48.64system 12:30.02elapsed 20%CPU (0avgtext+0avgdata 16861472maxresident)k
8390360inputs+18761608outputs (7major+3221254minor)pagefaults 0swaps