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=9237
  read : io=4,096MiB, bw=240MiB/s, iops=15,369, runt= 17056msec
    clat (usec): min=10, max=115, avg=12.83, stdev= 1.79
    bw (KiB/s) : min=    0, max=250624, per=97.14%, avg=238890.06, stdev=41824.81
  write: io=4,096MiB, bw=22,632KiB/s, iops=1,414, runt=185323msec
    clat (usec): min=13, max=844K, avg=610.84, stdev=8287.52
    bw (KiB/s) : min=    0, max=88495, per=103.77%, avg=23484.61, stdev=17215.30
  cpu          : usr=18.96%, sys=2.45%, ctx=58079, 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=94.66%, 50=1.95%, 100=0.30%, 250=0.11%, 500=0.12%
     lat (usec): 750=0.19%, 1000=0.22%
     lat (msec): 2=1.05%, 4=0.71%, 10=0.16%, 20=0.20%, 50=0.16%
     lat (msec): 100=0.11%, 250=0.05%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=9442
  read : io=4,037MiB, bw=157MiB/s, iops=10,062, runt= 25674msec
    clat (usec): min=2, max=112, avg=12.51, stdev= 3.08
    bw (KiB/s) : min=    0, max=250560, per=101.97%, avg=164177.53, stdev=46211.74
  write: io=1,024MiB, bw=48,531KiB/s, iops=3,033, runt= 21606msec
    clat (usec): min=2, max=1,431K, avg=38.40, stdev=5589.12
    bw (KiB/s) : min=    0, max=53920, per=102.20%, avg=49600.20, stdev=10579.25
  cpu          : usr=6.37%, sys=0.62%, ctx=2765, majf=0, minf=1114024
  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=258356/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.60%, 20=84.87%, 50=1.49%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=240MiB/s, minb=240MiB/s, maxb=240MiB/s, mint=17056msec, maxt=17056msec
  WRITE: io=4,096MiB, aggrb=22,632KiB/s, minb=22,632KiB/s, maxb=22,632KiB/s, mint=185323msec, maxt=185323msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=157MiB/s, minb=157MiB/s, maxb=157MiB/s, mint=25674msec, maxt=25674msec
  WRITE: io=1,024MiB, aggrb=48,532KiB/s, minb=48,532KiB/s, maxb=48,532KiB/s, mint=21606msec, maxt=21606msec

Disk stats (read/write):
  sda: ios=16915/63449, merge=527/1232729, ticks=231548/123816163, in_queue=124047641, util=93.31%
66.30user 30.79system 11:17.61elapsed 14%CPU (0avgtext+0avgdata 16861664maxresident)k
8390832inputs+18759504outputs (8major+3220227minor)pagefaults 0swaps