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=32592
  read : io=4,096MiB, bw=218MiB/s, iops=13,928, runt= 18821msec
    clat (usec): min=14, max=108, avg=19.50, stdev= 1.84
    bw (KiB/s) : min=    0, max=235360, per=97.28%, avg=216792.42, stdev=36292.34
  write: io=4,096MiB, bw=20,340KiB/s, iops=1,271, runt=206206msec
    clat (usec): min=16, max=487K, avg=558.57, stdev=6465.72
    bw (KiB/s) : min=    0, max=79360, per=101.60%, avg=20665.31, stdev=14021.00
  cpu          : usr=30.87%, sys=5.53%, ctx=97663, majf=1, minf=2102342
  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=16.91%, 50=77.29%, 100=2.48%, 250=1.82%, 500=0.15%
     lat (usec): 750=0.11%, 1000=0.15%
     lat (msec): 2=0.18%, 4=0.12%, 10=0.28%, 20=0.21%, 50=0.16%
     lat (msec): 100=0.11%, 250=0.05%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=32688
  read : io=4,038MiB, bw=153MiB/s, iops=9,779, runt= 26424msec
    clat (usec): min=2, max=230, avg=18.02, stdev= 4.44
    bw (KiB/s) : min=    0, max=234784, per=97.64%, avg=152785.51, stdev=39786.51
  write: io=1,024MiB, bw=47,399KiB/s, iops=2,962, runt= 22122msec
    clat (usec): min=3, max=256, avg=23.24, stdev= 4.22
    bw (KiB/s) : min=    0, max=50496, per=97.78%, avg=46350.93, stdev=7434.01
  cpu          : usr=6.65%, sys=1.17%, ctx=11567, majf=0, minf=1113821
  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=258411/65536, short=0/0
     lat (usec): 4=0.01%, 10=2.87%, 20=37.56%, 50=59.55%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=218MiB/s, minb=218MiB/s, maxb=218MiB/s, mint=18821msec, maxt=18821msec
  WRITE: io=4,096MiB, aggrb=20,340KiB/s, minb=20,340KiB/s, maxb=20,340KiB/s, mint=206206msec, maxt=206206msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=153MiB/s, minb=153MiB/s, maxb=153MiB/s, mint=26424msec, maxt=26424msec
  WRITE: io=1,024MiB, aggrb=47,401KiB/s, minb=47,401KiB/s, maxb=47,401KiB/s, mint=22122msec, maxt=22122msec

Disk stats (read/write):
  sda: ios=16625/77165, merge=815/1219173, ticks=250545/124584803, in_queue=124835228, util=93.14%
105.50user 48.61system 13:41.15elapsed 18%CPU (0avgtext+0avgdata 16861248maxresident)k
8390640inputs+18760888outputs (8major+3220218minor)pagefaults 0swaps