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=27353
  read : io=4,096MiB, bw=239MiB/s, iops=15,289, runt= 17145msec
    clat (usec): min=11, max=143, avg=13.13, stdev= 2.24
    bw (KiB/s) : min=    0, max=248768, per=97.14%, avg=237655.77, stdev=41705.67
  write: io=4,096MiB, bw=20,747KiB/s, iops=1,296, runt=202160msec
    clat (usec): min=14, max=1,135K, avg=571.57, stdev=9882.82
    bw (KiB/s) : min=    0, max=86400, per=106.31%, avg=22056.46, stdev=21774.22
  cpu          : usr=31.59%, sys=4.17%, ctx=70740, majf=1, minf=2102309
  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=51.36%, 50=45.07%, 100=0.30%, 250=1.47%, 500=0.33%
     lat (usec): 750=0.24%, 1000=0.30%
     lat (msec): 2=0.40%, 4=0.07%, 10=0.12%, 20=0.09%, 50=0.08%
     lat (msec): 100=0.08%, 250=0.07%, 500=0.01%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=27557
  read : io=4,037MiB, bw=160MiB/s, iops=10,271, runt= 25153msec
    clat (usec): min=2, max=140, avg=13.91, stdev= 3.66
    bw (KiB/s) : min=    0, max=240768, per=97.71%, avg=160589.44, stdev=41849.17
  write: io=1,024MiB, bw=50,132KiB/s, iops=3,133, runt= 20916msec
    clat (usec): min=2, max=248, avg=17.96, stdev= 4.45
    bw (KiB/s) : min=    0, max=53920, per=97.56%, avg=48912.74, stdev=9331.76
  cpu          : usr=7.11%, sys=1.10%, ctx=28095, majf=0, minf=1113999
  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=258358/65536, short=0/0
     lat (usec): 4=0.01%, 10=11.07%, 20=82.31%, 50=6.60%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=239MiB/s, minb=239MiB/s, maxb=239MiB/s, mint=17145msec, maxt=17145msec
  WRITE: io=4,096MiB, aggrb=20,747KiB/s, minb=20,747KiB/s, maxb=20,747KiB/s, mint=202160msec, maxt=202160msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=160MiB/s, minb=160MiB/s, maxb=160MiB/s, mint=25153msec, maxt=25153msec
  WRITE: io=1,024MiB, aggrb=50,135KiB/s, minb=50,135KiB/s, maxb=50,135KiB/s, mint=20916msec, maxt=20916msec

Disk stats (read/write):
  sda: ios=16717/75950, merge=724/1220275, ticks=231754/108886335, in_queue=109117981, util=92.70%
96.61user 48.63system 10:59.90elapsed 22%CPU (0avgtext+0avgdata 16861280maxresident)k
8390352inputs+18759664outputs (7major+3220119minor)pagefaults 0swaps