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=15776
  read : io=4,096MiB, bw=236MiB/s, iops=15,117, runt= 17341msec
    clat (usec): min=11, max=228, avg=13.69, stdev= 1.98
    bw (KiB/s) : min=    0, max=244704, per=97.25%, avg=235225.60, stdev=41238.18
  write: io=4,096MiB, bw=19,429KiB/s, iops=1,214, runt=215870msec
    clat (usec): min=15, max=821K, avg=605.28, stdev=7463.08
    bw (KiB/s) : min=    0, max=81088, per=102.00%, avg=19817.25, stdev=15459.13
  cpu          : usr=30.88%, sys=4.57%, ctx=78543, majf=1, 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=51.27%, 50=44.83%, 100=0.63%, 250=0.92%, 500=0.96%
     lat (usec): 750=0.16%, 1000=0.18%
     lat (msec): 2=0.27%, 4=0.10%, 10=0.21%, 20=0.17%, 50=0.10%
     lat (msec): 100=0.10%, 250=0.08%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=15887
  read : io=4,038MiB, bw=161MiB/s, iops=10,291, runt= 25114msec
    clat (usec): min=2, max=245, avg=13.52, stdev= 3.76
    bw (KiB/s) : min=    0, max=245728, per=97.43%, avg=160429.44, stdev=41250.88
  write: io=1,024MiB, bw=50,451KiB/s, iops=3,153, runt= 20784msec
    clat (usec): min=2, max=357, avg=18.40, stdev= 4.61
    bw (KiB/s) : min=    0, max=53376, per=97.32%, avg=49099.31, stdev=8235.02
  cpu          : usr=6.69%, sys=1.09%, ctx=16702, majf=0, minf=1114807
  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=258458/65536, short=0/0
     lat (usec): 4=0.01%, 10=12.15%, 20=80.73%, 50=7.07%, 100=0.03%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=236MiB/s, minb=236MiB/s, maxb=236MiB/s, mint=17341msec, maxt=17341msec
  WRITE: io=4,096MiB, aggrb=19,429KiB/s, minb=19,429KiB/s, maxb=19,429KiB/s, mint=215870msec, maxt=215870msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=161MiB/s, minb=161MiB/s, maxb=161MiB/s, mint=25114msec, maxt=25114msec
  WRITE: io=1,024MiB, aggrb=50,453KiB/s, minb=50,453KiB/s, maxb=50,453KiB/s, mint=20784msec, maxt=20784msec

Disk stats (read/write):
  sda: ios=16473/73689, merge=968/1222854, ticks=267729/120665805, in_queue=120933417, util=93.15%
102.06user 56.51system 12:35.00elapsed 21%CPU (0avgtext+0avgdata 16861504maxresident)k
8390648inputs+18823784outputs (8major+3221090minor)pagefaults 0swaps