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=14092
  read : io=4,096MiB, bw=231MiB/s, iops=14,797, runt= 17716msec
    clat (usec): min=11, max=104, avg=15.43, stdev= 2.29
    bw (KiB/s) : min=    0, max=246624, per=97.26%, avg=230257.78, stdev=40043.94
  write: io=4,096MiB, bw=19,279KiB/s, iops=1,204, runt=217547msec
    clat (usec): min=14, max=677K, avg=612.94, stdev=7557.03
    bw (KiB/s) : min=    0, max=80640, per=102.36%, avg=19734.81, stdev=16642.15
  cpu          : usr=30.63%, sys=4.12%, ctx=61875, majf=1, minf=2102312
  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=50.85%, 50=45.62%, 100=0.25%, 250=1.49%, 500=0.33%
     lat (usec): 750=0.19%, 1000=0.20%
     lat (msec): 2=0.29%, 4=0.09%, 10=0.22%, 20=0.16%, 50=0.11%
     lat (msec): 100=0.10%, 250=0.08%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=14193
  read : io=4,037MiB, bw=159MiB/s, iops=10,165, runt= 25418msec
    clat (usec): min=2, max=229, avg=14.39, stdev= 3.77
    bw (KiB/s) : min=    0, max=246336, per=97.82%, avg=159103.37, stdev=41576.54
  write: io=1,024MiB, bw=49,351KiB/s, iops=3,084, runt= 21247msec
    clat (usec): min=3, max=264, avg=18.18, stdev= 4.31
    bw (KiB/s) : min=    0, max=52480, per=97.62%, avg=48177.70, stdev=8745.57
  cpu          : usr=6.63%, sys=0.93%, ctx=16336, majf=0, minf=1114474
  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=258385/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.69%, 20=81.23%, 50=10.05%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=231MiB/s, minb=231MiB/s, maxb=231MiB/s, mint=17716msec, maxt=17716msec
  WRITE: io=4,096MiB, aggrb=19,280KiB/s, minb=19,280KiB/s, maxb=19,280KiB/s, mint=217547msec, maxt=217547msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25418msec, maxt=25418msec
  WRITE: io=1,024MiB, aggrb=49,353KiB/s, minb=49,353KiB/s, maxb=49,353KiB/s, mint=21247msec, maxt=21247msec

Disk stats (read/write):
  sda: ios=16493/66584, merge=948/1229749, ticks=274010/122486045, in_queue=122759928, util=93.23%
101.99user 46.06system 12:40.27elapsed 19%CPU (0avgtext+0avgdata 16861584maxresident)k
8390664inputs+18760664outputs (8major+3220799minor)pagefaults 0swaps