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=27579
  read : io=4,096MiB, bw=230MiB/s, iops=14,732, runt= 17794msec
    clat (usec): min=11, max=103, avg=15.76, stdev= 1.99
    bw (KiB/s) : min=    0, max=248000, per=97.25%, avg=229224.89, stdev=39649.53
  write: io=4,096MiB, bw=19,130KiB/s, iops=1,195, runt=219248msec
    clat (usec): min=13, max=449K, avg=613.93, stdev=7388.30
    bw (KiB/s) : min=    0, max=79104, per=101.84%, avg=19482.77, stdev=15393.94
  cpu          : usr=31.15%, sys=4.24%, ctx=68253, majf=1, minf=2102310
  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=50.62%, 50=45.64%, 100=0.47%, 250=1.55%, 500=0.36%
     lat (usec): 750=0.16%, 1000=0.18%
     lat (msec): 2=0.24%, 4=0.10%, 10=0.20%, 20=0.17%, 50=0.11%
     lat (msec): 100=0.11%, 250=0.08%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=27687
  read : io=4,040MiB, bw=154MiB/s, iops=9,834, runt= 26291msec
    clat (usec): min=2, max=211, avg=15.11, stdev= 3.93
    bw (KiB/s) : min=    0, max=247296, per=99.76%, avg=156978.73, stdev=45853.29
  write: io=1,024MiB, bw=47,414KiB/s, iops=2,963, runt= 22115msec
    clat (usec): min=2, max=861K, avg=33.55, stdev=3362.95
    bw (KiB/s) : min=    0, max=54016, per=99.91%, avg=47374.72, stdev=9523.57
  cpu          : usr=7.63%, sys=1.20%, ctx=35215, majf=0, minf=1114683
  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=258554/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.48%, 20=75.58%, 50=18.92%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 1000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17794msec, maxt=17794msec
  WRITE: io=4,096MiB, aggrb=19,130KiB/s, minb=19,130KiB/s, maxb=19,130KiB/s, mint=219248msec, maxt=219248msec

Run status group 1 (all jobs):
   READ: io=4,040MiB, aggrb=154MiB/s, minb=154MiB/s, maxb=154MiB/s, mint=26291msec, maxt=26291msec
  WRITE: io=1,024MiB, aggrb=47,416KiB/s, minb=47,416KiB/s, maxb=47,416KiB/s, mint=22115msec, maxt=22115msec

Disk stats (read/write):
  sda: ios=16462/71012, merge=979/1225942, ticks=270779/106549320, in_queue=106819989, util=92.68%
103.73user 45.88system 11:55.75elapsed 20%CPU (0avgtext+0avgdata 16861104maxresident)k
8390384inputs+18765736outputs (7major+3220832minor)pagefaults 0swaps