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=32056
  read : io=4,096MiB, bw=237MiB/s, iops=15,197, runt= 17249msec
    clat (usec): min=10, max=206, avg=13.57, stdev= 2.33
    bw (KiB/s) : min=    0, max=250944, per=97.18%, avg=236323.66, stdev=41574.81
  write: io=4,096MiB, bw=23,131KiB/s, iops=1,445, runt=181328msec
    clat (usec): min=14, max=1,146K, avg=594.24, stdev=7390.47
    bw (KiB/s) : min=    0, max=88096, per=102.41%, avg=23689.16, stdev=16873.51
  cpu          : usr=19.73%, sys=2.81%, ctx=18136, majf=1, minf=2108424
  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=69.53%, 50=27.10%, 100=0.15%, 250=0.22%, 500=0.13%
     lat (usec): 750=0.16%, 1000=0.19%
     lat (msec): 2=1.14%, 4=0.83%, 10=0.12%, 20=0.12%, 50=0.12%
     lat (msec): 100=0.12%, 250=0.06%, 500=0.01%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=32252
  read : io=4,038MiB, bw=161MiB/s, iops=10,319, runt= 25045msec
    clat (usec): min=2, max=198, avg=13.16, stdev= 3.33
    bw (KiB/s) : min=    0, max=249056, per=98.27%, avg=162257.94, stdev=43484.97
  write: io=1,024MiB, bw=50,020KiB/s, iops=3,126, runt= 20963msec
    clat (usec): min=5, max=415K, avg=23.60, stdev=1620.78
    bw (KiB/s) : min=    0, max=53088, per=98.02%, avg=49027.19, stdev=9368.61
  cpu          : usr=7.37%, sys=0.84%, ctx=1606, majf=0, minf=1116937
  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=258451/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.51%, 20=83.18%, 50=3.28%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 500=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=237MiB/s, minb=237MiB/s, maxb=237MiB/s, mint=17249msec, maxt=17249msec
  WRITE: io=4,096MiB, aggrb=23,131KiB/s, minb=23,131KiB/s, maxb=23,131KiB/s, mint=181328msec, maxt=181328msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=161MiB/s, minb=161MiB/s, maxb=161MiB/s, mint=25045msec, maxt=25045msec
  WRITE: io=1,024MiB, aggrb=50,020KiB/s, minb=50,020KiB/s, maxb=50,020KiB/s, mint=20963msec, maxt=20963msec

Disk stats (read/write):
  sda: ios=17087/62280, merge=354/1234300, ticks=291694/96330812, in_queue=96622465, util=92.51%
67.27user 31.34system 10:36.19elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
8390816inputs+18828080outputs (8major+3229049minor)pagefaults 0swaps