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=10671
  read : io=4,096MiB, bw=234MiB/s, iops=14,977, runt= 17503msec
    clat (usec): min=11, max=122, avg=14.63, stdev= 2.24
    bw (KiB/s) : min=    0, max=249120, per=97.23%, avg=232997.33, stdev=40481.77
  write: io=4,096MiB, bw=18,890KiB/s, iops=1,180, runt=222032msec
    clat (usec): min=15, max=937K, avg=647.60, stdev=10717.09
    bw (KiB/s) : min=    0, max=79296, per=107.03%, avg=20218.09, stdev=21368.90
  cpu          : usr=30.29%, sys=3.61%, ctx=12778, majf=1, minf=2102310
  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=50.14%, 50=45.87%, 100=0.73%, 250=1.28%, 500=0.45%
     lat (usec): 750=0.24%, 1000=0.30%
     lat (msec): 2=0.39%, 4=0.07%, 10=0.15%, 20=0.12%, 50=0.09%
     lat (msec): 100=0.08%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=10960
  read : io=4,038MiB, bw=160MiB/s, iops=10,267, runt= 25167msec
    clat (usec): min=2, max=230, avg=14.94, stdev= 3.71
    bw (KiB/s) : min=    0, max=247648, per=97.88%, avg=160800.63, stdev=40962.33
  write: io=1,024MiB, bw=49,773KiB/s, iops=3,110, runt= 21067msec
    clat (usec): min=2, max=309, avg=19.98, stdev= 4.30
    bw (KiB/s) : min=    0, max=52128, per=97.68%, avg=48618.30, stdev=7760.30
  cpu          : usr=6.84%, sys=1.04%, ctx=30600, majf=0, minf=1114585
  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=258408/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.33%, 20=78.45%, 50=16.19%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=234MiB/s, minb=234MiB/s, maxb=234MiB/s, mint=17503msec, maxt=17503msec
  WRITE: io=4,096MiB, aggrb=18,890KiB/s, minb=18,890KiB/s, maxb=18,890KiB/s, mint=222032msec, maxt=222032msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=160MiB/s, minb=160MiB/s, maxb=160MiB/s, mint=25167msec, maxt=25167msec
  WRITE: io=1,024MiB, aggrb=49,774KiB/s, minb=49,774KiB/s, maxb=49,774KiB/s, mint=21067msec, maxt=21067msec

Disk stats (read/write):
  sda: ios=16684/63608, merge=758/1232750, ticks=274318/102972093, in_queue=103246351, util=92.86%
96.84user 50.27system 12:09.52elapsed 20%CPU (0avgtext+0avgdata 16861296maxresident)k
8390400inputs+18760712outputs (7major+3220786minor)pagefaults 0swaps