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=8518
  read : io=4,096MiB, bw=230MiB/s, iops=14,725, runt= 17802msec
    clat (usec): min=11, max=124, avg=15.76, stdev= 2.42
    bw (KiB/s) : min=    0, max=246752, per=97.16%, avg=228926.22, stdev=39782.33
  write: io=4,096MiB, bw=20,415KiB/s, iops=1,275, runt=205450msec
    clat (usec): min=16, max=892K, avg=584.23, stdev=10162.48
    bw (KiB/s) : min=    0, max=80576, per=106.46%, avg=21733.89, stdev=21064.50
  cpu          : usr=31.85%, sys=4.23%, ctx=11385, majf=1, minf=2102309
  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=50.39%, 50=45.46%, 100=0.89%, 250=1.08%, 500=0.73%
     lat (usec): 750=0.23%, 1000=0.30%
     lat (msec): 2=0.40%, 4=0.06%, 10=0.13%, 20=0.10%, 50=0.07%
     lat (msec): 100=0.07%, 250=0.07%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=8774
  read : io=4,038MiB, bw=148MiB/s, iops=9,492, runt= 27222msec
    clat (usec): min=2, max=243, avg=15.28, stdev= 4.11
    bw (KiB/s) : min=    0, max=241664, per=102.45%, avg=155607.20, stdev=44861.24
  write: io=1,024MiB, bw=45,532KiB/s, iops=2,845, runt= 23029msec
    clat (usec): min=2, max=1,651K, avg=45.23, stdev=6450.92
    bw (KiB/s) : min=    0, max=52480, per=102.81%, avg=46813.30, stdev=10520.10
  cpu          : usr=6.78%, sys=0.96%, ctx=5360, majf=0, minf=1114311
  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=258401/65536, short=0/0
     lat (usec): 4=0.01%, 10=9.12%, 20=73.71%, 50=17.14%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17802msec, maxt=17802msec
  WRITE: io=4,096MiB, aggrb=20,415KiB/s, minb=20,415KiB/s, maxb=20,415KiB/s, mint=205450msec, maxt=205450msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=148MiB/s, minb=148MiB/s, maxb=148MiB/s, mint=27222msec, maxt=27222msec
  WRITE: io=1,024MiB, aggrb=45,534KiB/s, minb=45,534KiB/s, maxb=45,534KiB/s, mint=23029msec, maxt=23029msec

Disk stats (read/write):
  sda: ios=16702/61988, merge=739/1234379, ticks=233353/118698684, in_queue=118931927, util=92.80%
97.03user 48.80system 11:20.90elapsed 21%CPU (0avgtext+0avgdata 16861728maxresident)k
8390640inputs+18760976outputs (8major+3220496minor)pagefaults 0swaps