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=9806
  read : io=4,096MiB, bw=232MiB/s, iops=14,839, runt= 17665msec
    clat (usec): min=11, max=104, avg=15.25, stdev= 2.33
    bw (KiB/s) : min=    0, max=247424, per=97.25%, avg=230925.33, stdev=40197.19
  write: io=4,096MiB, bw=19,132KiB/s, iops=1,195, runt=219223msec
    clat (usec): min=14, max=460K, avg=611.55, stdev=7376.47
    bw (KiB/s) : min=    0, max=78816, per=101.68%, avg=19453.62, stdev=15286.69
  cpu          : usr=31.25%, sys=4.33%, ctx=72582, majf=1, minf=2102311
  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=49.73%, 50=46.55%, 100=0.43%, 250=1.60%, 500=0.35%
     lat (usec): 750=0.16%, 1000=0.19%
     lat (msec): 2=0.24%, 4=0.09%, 10=0.21%, 20=0.16%, 50=0.10%
     lat (msec): 100=0.11%, 250=0.08%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=9921
  read : io=4,037MiB, bw=160MiB/s, iops=10,260, runt= 25182msec
    clat (usec): min=2, max=180, avg=14.57, stdev= 3.77
    bw (KiB/s) : min=    0, max=246976, per=97.78%, avg=160527.06, stdev=40850.16
  write: io=1,024MiB, bw=49,910KiB/s, iops=3,119, runt= 21009msec
    clat (usec): min=3, max=170, avg=18.70, stdev= 4.28
    bw (KiB/s) : min=    0, max=52896, per=97.65%, avg=48736.76, stdev=8633.70
  cpu          : usr=6.57%, sys=0.99%, ctx=13489, majf=0, minf=1114501
  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=258388/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.67%, 20=79.92%, 50=11.38%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=232MiB/s, minb=232MiB/s, maxb=232MiB/s, mint=17665msec, maxt=17665msec
  WRITE: io=4,096MiB, aggrb=19,132KiB/s, minb=19,132KiB/s, maxb=19,132KiB/s, mint=219223msec, maxt=219223msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=160MiB/s, minb=160MiB/s, maxb=160MiB/s, mint=25182msec, maxt=25182msec
  WRITE: io=1,024MiB, aggrb=49,911KiB/s, minb=49,911KiB/s, maxb=49,911KiB/s, mint=21009msec, maxt=21009msec

Disk stats (read/write):
  sda: ios=16473/65896, merge=967/1230440, ticks=272763/123107794, in_queue=123380447, util=93.29%
103.67user 46.87system 12:39.02elapsed 19%CPU (0avgtext+0avgdata 16861552maxresident)k
8390776inputs+18760792outputs (9major+3220827minor)pagefaults 0swaps