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=11243
  read : io=4,096MiB, bw=222MiB/s, iops=14,205, runt= 18454msec
    clat (usec): min=12, max=598, avg=16.79, stdev= 3.41
    bw (KiB/s) : min=    0, max=243328, per=97.30%, avg=221169.30, stdev=45594.30
  write: io=4,096MiB, bw=18,336KiB/s, iops=1,146, runt=228737msec
    clat (usec): min=15, max=671K, avg=660.39, stdev=7526.85
    bw (KiB/s) : min=    0, max=65920, per=102.62%, avg=18816.07, stdev=17354.07
  cpu          : usr=30.12%, sys=4.82%, ctx=16611, majf=0, 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=49.07%, 50=44.77%, 100=2.78%, 250=0.34%, 500=1.07%
     lat (usec): 750=0.08%, 1000=0.18%
     lat (msec): 2=0.84%, 4=0.21%, 10=0.17%, 20=0.12%, 50=0.15%
     lat (msec): 100=0.15%, 250=0.06%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=11478
  read : io=4,036MiB, bw=34,467KiB/s, iops=2,154, runt=119915msec
    clat (usec): min=2, max=728, avg=26.75, stdev=24.59
    bw (KiB/s) : min=    0, max=227104, per=213.97%, avg=73747.87, stdev=69017.15
  write: io=1,024MiB, bw=9,006KiB/s, iops=562, runt=116428msec
    clat (usec): min=2, max=5,351K, avg=1289.17, stdev=54917.77
    bw (KiB/s) : min=    0, max=49248, per=219.82%, avg=19797.06, stdev=18753.95
  cpu          : usr=11.22%, sys=2.82%, ctx=22649, majf=0, minf=1124020
  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=258321/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.23%, 20=32.93%, 50=54.65%, 100=5.89%
     lat (usec): 250=2.25%, 500=0.03%, 750=0.01%
     lat (msec): 100=0.01%, 500=0.01%, 750=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=222MiB/s, minb=222MiB/s, maxb=222MiB/s, mint=18454msec, maxt=18454msec
  WRITE: io=4,096MiB, aggrb=18,336KiB/s, minb=18,336KiB/s, maxb=18,336KiB/s, mint=228737msec, maxt=228737msec

Run status group 1 (all jobs):
   READ: io=4,036MiB, aggrb=34,467KiB/s, minb=34,467KiB/s, maxb=34,467KiB/s, mint=119915msec, maxt=119915msec
  WRITE: io=1,024MiB, aggrb=9,006KiB/s, minb=9,006KiB/s, maxb=9,006KiB/s, mint=116428msec, maxt=116428msec

Disk stats (read/write):
  sda: ios=18410/62358, merge=14385/1235687, ticks=246239/50913124, in_queue=51159337, util=92.70%
110.22user 69.16system 11:46.89elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
8390528inputs+18839280outputs (33major+3230082minor)pagefaults 0swaps