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=28406
  read : io=4,096MiB, bw=195MiB/s, iops=12,505, runt= 20962msec
    clat (usec): min=12, max=182, avg=18.24, stdev= 5.28
    bw (KiB/s) : min=    0, max=243360, per=97.33%, avg=194755.74, stdev=60487.23
  write: io=4,096MiB, bw=17,524KiB/s, iops=1,095, runt=239338msec
    clat (usec): min=16, max=425K, avg=698.10, stdev=7221.03
    bw (KiB/s) : min=    0, max=66427, per=102.34%, avg=17934.32, stdev=16412.00
  cpu          : usr=30.27%, sys=4.64%, ctx=17012, majf=0, minf=2102311
  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=44.41%, 50=48.98%, 100=3.22%, 250=0.45%, 500=1.02%
     lat (usec): 750=0.09%, 1000=0.13%
     lat (msec): 2=0.73%, 4=0.23%, 10=0.18%, 20=0.13%, 50=0.18%
     lat (msec): 100=0.16%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=28649
  read : io=4,036MiB, bw=36,622KiB/s, iops=2,288, runt=112861msec
    clat (usec): min=2, max=960, avg=22.63, stdev=11.27
    bw (KiB/s) : min=    0, max=229216, per=225.70%, avg=82654.98, stdev=73569.65
  write: io=1,024MiB, bw=9,689KiB/s, iops=605, runt=108215msec
    clat (usec): min=4, max=3,301K, avg=1197.47, stdev=52506.42
    bw (KiB/s) : min=    0, max=50272, per=232.73%, avg=22549.67, stdev=20418.15
  cpu          : usr=10.65%, sys=2.52%, ctx=20687, majf=0, minf=1126868
  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=258330/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.39%, 20=36.87%, 50=53.74%, 100=4.92%
     lat (usec): 250=0.05%, 500=0.01%, 750=0.01%, 1000=0.01%
     lat (msec): 50=0.01%, 250=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=195MiB/s, minb=195MiB/s, maxb=195MiB/s, mint=20962msec, maxt=20962msec
  WRITE: io=4,096MiB, aggrb=17,524KiB/s, minb=17,524KiB/s, maxb=17,524KiB/s, mint=239338msec, maxt=239338msec

Run status group 1 (all jobs):
   READ: io=4,036MiB, aggrb=36,622KiB/s, minb=36,622KiB/s, maxb=36,622KiB/s, mint=112861msec, maxt=112861msec
  WRITE: io=1,024MiB, aggrb=9,689KiB/s, minb=9,689KiB/s, maxb=9,689KiB/s, mint=108215msec, maxt=108215msec

Disk stats (read/write):
  sda: ios=18399/63192, merge=14396/1235675, ticks=263001/51572723, in_queue=51835685, util=92.55%
111.65user 70.98system 11:54.24elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
8390592inputs+18862936outputs (33major+3232968minor)pagefaults 0swaps