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=28253
  read : io=4,096MiB, bw=234MiB/s, iops=15,006, runt= 17469msec
    clat (usec): min=11, max=231, avg=14.18, stdev= 2.87
    bw (KiB/s) : min=    0, max=246784, per=97.08%, avg=233089.83, stdev=41086.49
  write: io=4,096MiB, bw=21,281KiB/s, iops=1,330, runt=197088msec
    clat (usec): min=15, max=873K, avg=524.96, stdev=9340.01
    bw (KiB/s) : min=    0, max=79072, per=105.51%, avg=22454.49, stdev=17460.34
  cpu          : usr=33.14%, sys=5.25%, ctx=58250, 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=50.36%, 50=45.50%, 100=0.82%, 250=1.62%, 500=0.38%
     lat (usec): 750=0.11%, 1000=0.13%
     lat (msec): 2=0.22%, 4=0.14%, 10=0.26%, 20=0.19%, 50=0.14%
     lat (msec): 100=0.07%, 250=0.03%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=28521
  read : io=4,039MiB, bw=160MiB/s, iops=10,252, runt= 25211msec
    clat (usec): min=2, max=141, avg=14.99, stdev= 3.70
    bw (KiB/s) : min=    0, max=244224, per=97.68%, avg=160231.53, stdev=40147.08
  write: io=1,024MiB, bw=49,906KiB/s, iops=3,119, runt= 21011msec
    clat (usec): min=5, max=238, avg=19.67, stdev= 4.21
    bw (KiB/s) : min=    0, max=52544, per=97.72%, avg=48766.51, stdev=7886.45
  cpu          : usr=6.68%, sys=0.95%, ctx=880, majf=0, minf=1114795
  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=258480/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.68%, 20=77.95%, 50=16.35%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=234MiB/s, minb=234MiB/s, maxb=234MiB/s, mint=17469msec, maxt=17469msec
  WRITE: io=4,096MiB, aggrb=21,281KiB/s, minb=21,281KiB/s, maxb=21,281KiB/s, mint=197088msec, maxt=197088msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=160MiB/s, minb=160MiB/s, maxb=160MiB/s, mint=25211msec, maxt=25211msec
  WRITE: io=1,024MiB, aggrb=49,906KiB/s, minb=49,906KiB/s, maxb=49,906KiB/s, mint=21011msec, maxt=21011msec

Disk stats (read/write):
  sda: ios=17253/63496, merge=188/1233170, ticks=216012/123555233, in_queue=123771138, util=93.15%
103.83user 52.37system 11:26.14elapsed 22%CPU (0avgtext+0avgdata 16861728maxresident)k
8390648inputs+18763344outputs (8major+3221029minor)pagefaults 0swaps