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=31586
  read : io=4,096MiB, bw=230MiB/s, iops=14,730, runt= 17796msec
    clat (usec): min=11, max=121, avg=15.64, stdev= 2.47
    bw (KiB/s) : min=    0, max=246016, per=97.27%, avg=229257.78, stdev=39813.93
  write: io=4,096MiB, bw=20,182KiB/s, iops=1,261, runt=207822msec
    clat (usec): min=15, max=789K, avg=562.65, stdev=8213.40
    bw (KiB/s) : min=    0, max=78464, per=103.93%, avg=20974.33, stdev=16331.14
  cpu          : usr=32.18%, sys=5.34%, ctx=55267, majf=1, minf=2102310
  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=49.74%, 50=45.77%, 100=1.14%, 250=1.52%, 500=0.40%
     lat (usec): 750=0.11%, 1000=0.15%
     lat (msec): 2=0.20%, 4=0.14%, 10=0.30%, 20=0.23%, 50=0.17%
     lat (msec): 100=0.08%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=31699
  read : io=4,038MiB, bw=153MiB/s, iops=9,770, runt= 26448msec
    clat (usec): min=2, max=237, avg=14.78, stdev= 4.01
    bw (KiB/s) : min=    0, max=242432, per=100.26%, avg=156740.00, stdev=44568.81
  write: io=1,024MiB, bw=47,012KiB/s, iops=2,938, runt= 22304msec
    clat (usec): min=3, max=980K, avg=33.82, stdev=3827.84
    bw (KiB/s) : min=    0, max=52032, per=100.20%, avg=47108.12, stdev=10039.47
  cpu          : usr=6.64%, sys=0.88%, ctx=891, majf=0, minf=1114451
  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=258400/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.05%, 20=79.06%, 50=12.86%, 100=0.02%
     lat (usec): 250=0.01%
     lat (msec): 1000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17796msec, maxt=17796msec
  WRITE: io=4,096MiB, aggrb=20,182KiB/s, minb=20,182KiB/s, maxb=20,182KiB/s, mint=207822msec, maxt=207822msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=153MiB/s, minb=153MiB/s, maxb=153MiB/s, mint=26448msec, maxt=26448msec
  WRITE: io=1,024MiB, aggrb=47,013KiB/s, minb=47,013KiB/s, maxb=47,013KiB/s, mint=22304msec, maxt=22304msec

Disk stats (read/write):
  sda: ios=17224/65283, merge=217/1231086, ticks=237584/125997824, in_queue=126235295, util=93.22%
105.18user 54.36system 11:48.43elapsed 22%CPU (0avgtext+0avgdata 16861712maxresident)k
8390648inputs+18760920outputs (8major+3220753minor)pagefaults 0swaps