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=6626
  read : io=4,096MiB, bw=220MiB/s, iops=14,094, runt= 18599msec
    clat (usec): min=13, max=231, avg=18.66, stdev= 2.29
    bw (KiB/s) : min=    0, max=236160, per=97.39%, avg=219628.63, stdev=37010.80
  write: io=4,096MiB, bw=20,539KiB/s, iops=1,283, runt=204206msec
    clat (usec): min=16, max=448K, avg=547.18, stdev=6412.84
    bw (KiB/s) : min=    0, max=78400, per=101.39%, avg=20824.57, stdev=14144.33
  cpu          : usr=31.53%, sys=5.28%, ctx=70206, majf=1, minf=2102341
  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=28.00%, 50=66.65%, 100=2.03%, 250=1.73%, 500=0.21%
     lat (usec): 750=0.13%, 1000=0.15%
     lat (msec): 2=0.19%, 4=0.13%, 10=0.27%, 20=0.20%, 50=0.15%
     lat (msec): 100=0.10%, 250=0.05%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6739
  read : io=4,037MiB, bw=154MiB/s, iops=9,862, runt= 26199msec
    clat (usec): min=2, max=374, avg=17.56, stdev= 4.60
    bw (KiB/s) : min=    0, max=236544, per=97.54%, avg=153922.46, stdev=39663.41
  write: io=1,024MiB, bw=47,919KiB/s, iops=2,994, runt= 21882msec
    clat (usec): min=3, max=237, avg=22.38, stdev= 4.50
    bw (KiB/s) : min=    0, max=50752, per=97.77%, avg=46850.18, stdev=7753.75
  cpu          : usr=6.42%, sys=1.05%, ctx=2891, majf=0, minf=1113981
  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=258399/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.29%, 20=43.14%, 50=52.54%, 100=0.02%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=220MiB/s, minb=220MiB/s, maxb=220MiB/s, mint=18599msec, maxt=18599msec
  WRITE: io=4,096MiB, aggrb=20,539KiB/s, minb=20,539KiB/s, maxb=20,539KiB/s, mint=204206msec, maxt=204206msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=154MiB/s, minb=154MiB/s, maxb=154MiB/s, mint=26199msec, maxt=26199msec
  WRITE: io=1,024MiB, aggrb=47,919KiB/s, minb=47,919KiB/s, maxb=47,919KiB/s, mint=21882msec, maxt=21882msec

Disk stats (read/write):
  sda: ios=16630/68273, merge=810/1228066, ticks=246505/133492146, in_queue=133738531, util=93.28%
105.95user 47.16system 12:59.76elapsed 19%CPU (0avgtext+0avgdata 16861296maxresident)k
8390400inputs+18761216outputs (7major+3220402minor)pagefaults 0swaps