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=32314
  read : io=4,096MiB, bw=236MiB/s, iops=15,130, runt= 17326msec
    clat (usec): min=10, max=146, avg=13.77, stdev= 2.51
    bw (KiB/s) : min=    0, max=249216, per=97.10%, avg=235071.09, stdev=41531.15
  write: io=4,096MiB, bw=20,560KiB/s, iops=1,285, runt=203996msec
    clat (usec): min=15, max=840K, avg=575.96, stdev=9694.90
    bw (KiB/s) : min=    0, max=79008, per=105.76%, avg=21743.38, stdev=21160.13
  cpu          : usr=31.83%, sys=3.93%, ctx=49269, majf=1, minf=2102309
  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=51.10%, 50=45.48%, 100=0.17%, 250=1.51%, 500=0.29%
     lat (usec): 750=0.23%, 1000=0.29%
     lat (msec): 2=0.39%, 4=0.06%, 10=0.12%, 20=0.10%, 50=0.08%
     lat (msec): 100=0.08%, 250=0.07%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=32579
  read : io=4,038MiB, bw=151MiB/s, iops=9,695, runt= 26654msec
    clat (usec): min=2, max=297, avg=14.65, stdev= 3.92
    bw (KiB/s) : min=    0, max=247648, per=100.96%, avg=156616.90, stdev=46463.17
  write: io=1,024MiB, bw=46,684KiB/s, iops=2,917, runt= 22461msec
    clat (usec): min=4, max=1,332K, avg=39.32, stdev=5204.44
    bw (KiB/s) : min=    0, max=52544, per=101.51%, avg=47389.82, stdev=11167.83
  cpu          : usr=6.55%, sys=0.86%, ctx=1226, majf=0, minf=1114303
  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=258417/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.11%, 20=79.73%, 50=12.13%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=236MiB/s, minb=236MiB/s, maxb=236MiB/s, mint=17326msec, maxt=17326msec
  WRITE: io=4,096MiB, aggrb=20,560KiB/s, minb=20,560KiB/s, maxb=20,560KiB/s, mint=203996msec, maxt=203996msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=151MiB/s, minb=151MiB/s, maxb=151MiB/s, mint=26654msec, maxt=26654msec
  WRITE: io=1,024MiB, aggrb=46,684KiB/s, minb=46,684KiB/s, maxb=46,684KiB/s, mint=22461msec, maxt=22461msec

Disk stats (read/write):
  sda: ios=16694/64644, merge=746/1231714, ticks=238242/122311010, in_queue=122549205, util=93.02%
97.20user 49.29system 11:25.80elapsed 21%CPU (0avgtext+0avgdata 16861712maxresident)k
8390960inputs+18760912outputs (9major+3220531minor)pagefaults 0swaps