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=9437
  read : io=4,096MiB, bw=238MiB/s, iops=15,240, runt= 17201msec
    clat (usec): min=9, max=153, avg=13.52, stdev= 1.97
    bw (KiB/s) : min=    0, max=252736, per=97.13%, avg=236863.09, stdev=41371.25
  write: io=4,096MiB, bw=6,025KiB/s, iops=376, runt=696090msec
    clat (usec): min=13, max=7,473K, avg=2559.36, stdev=85596.10
    bw (KiB/s) : min=    0, max=77280, per=188.91%, avg=11381.57, stdev=11883.68
  cpu          : usr=4.18%, sys=0.52%, ctx=121998, majf=1, minf=2102325
  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): 10=0.01%, 20=95.15%, 50=1.55%, 100=0.16%, 250=0.08%
     lat (usec): 500=0.06%, 750=0.10%, 1000=0.12%
     lat (msec): 2=0.73%, 4=1.14%, 10=0.52%, 20=0.05%, 50=0.03%
     lat (msec): 100=0.17%, 250=0.03%, 500=0.07%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%, >=2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=10361
  read : io=4,038MiB, bw=165MiB/s, iops=10,545, runt= 24507msec
    clat (usec): min=2, max=108, avg=13.48, stdev= 3.07
    bw (KiB/s) : min=    0, max=248544, per=98.06%, avg=165447.18, stdev=42201.56
  write: io=1,024MiB, bw=51,140KiB/s, iops=3,196, runt= 20504msec
    clat (usec): min=3, max=44, avg=17.51, stdev= 2.86
    bw (KiB/s) : min=    0, max=52960, per=97.51%, avg=49868.39, stdev=8042.13
  cpu          : usr=4.10%, sys=0.44%, ctx=4502, majf=0, minf=1114432
  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=258434/65536, short=0/0
     lat (usec): 4=0.01%, 10=12.15%, 20=84.20%, 50=3.63%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=238MiB/s, minb=238MiB/s, maxb=238MiB/s, mint=17201msec, maxt=17201msec
  WRITE: io=4,096MiB, aggrb=6,025KiB/s, minb=6,025KiB/s, maxb=6,025KiB/s, mint=696090msec, maxt=696090msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=165MiB/s, minb=165MiB/s, maxb=165MiB/s, mint=24507msec, maxt=24507msec
  WRITE: io=1,024MiB, aggrb=51,140KiB/s, minb=51,140KiB/s, maxb=51,140KiB/s, mint=20504msec, maxt=20504msec

Disk stats (read/write):
  sda: ios=16845/64808, merge=596/1231543, ticks=518613/301374870, in_queue=301893429, util=97.60%
66.79user 36.54system 37:41.14elapsed 4%CPU (0avgtext+0avgdata 16861648maxresident)k
8390672inputs+18759112outputs (7major+3224738minor)pagefaults 0swaps