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=26406
  read : io=4,096MiB, bw=223MiB/s, iops=14,253, runt= 18392msec
    clat (usec): min=12, max=313, avg=16.85, stdev= 2.76
    bw (KiB/s) : min=    0, max=243040, per=97.31%, avg=221921.73, stdev=40586.59
  write: io=4,096MiB, bw=17,751KiB/s, iops=1,109, runt=236282msec
    clat (usec): min=17, max=346K, avg=687.29, stdev=7281.19
    bw (KiB/s) : min=    0, max=66304, per=102.33%, avg=18164.05, stdev=17217.61
  cpu          : usr=29.73%, sys=4.88%, ctx=16175, majf=0, minf=2102324
  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=49.05%, 50=43.50%, 100=4.02%, 250=0.30%, 500=1.19%
     lat (usec): 750=0.09%, 1000=0.21%
     lat (msec): 2=0.77%, 4=0.20%, 10=0.16%, 20=0.12%, 50=0.16%
     lat (msec): 100=0.16%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=26670
  read : io=4,038MiB, bw=36,497KiB/s, iops=2,281, runt=113301msec
    clat (usec): min=2, max=701, avg=24.11, stdev=12.12
    bw (KiB/s) : min=    0, max=229952, per=220.06%, avg=80314.75, stdev=71419.55
  write: io=1,024MiB, bw=9,694KiB/s, iops=605, runt=108159msec
    clat (usec): min=2, max=3,755K, avg=1191.33, stdev=50759.74
    bw (KiB/s) : min=    0, max=49120, per=224.18%, avg=21732.05, stdev=20111.16
  cpu          : usr=10.76%, sys=2.66%, ctx=10843, majf=0, minf=1124954
  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=258448/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.58%, 20=28.63%, 50=60.63%, 100=6.08%
     lat (usec): 250=0.05%, 500=0.01%, 750=0.01%
     lat (msec): 250=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=223MiB/s, minb=223MiB/s, maxb=223MiB/s, mint=18392msec, maxt=18392msec
  WRITE: io=4,096MiB, aggrb=17,751KiB/s, minb=17,751KiB/s, maxb=17,751KiB/s, mint=236282msec, maxt=236282msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=36,497KiB/s, minb=36,497KiB/s, maxb=36,497KiB/s, mint=113301msec, maxt=113301msec
  WRITE: io=1,024MiB, aggrb=9,694KiB/s, minb=9,694KiB/s, maxb=9,694KiB/s, mint=108159msec, maxt=108159msec

Disk stats (read/write):
  sda: ios=18414/62967, merge=14382/1235790, ticks=258475/51335711, in_queue=51594133, util=92.62%
109.10user 71.53system 11:56.28elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
8390536inputs+18846816outputs (33major+3231047minor)pagefaults 0swaps