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=26243
  read : io=4,096MiB, bw=241MiB/s, iops=15,423, runt= 16996msec
    clat (usec): min=10, max=162, avg=12.54, stdev= 2.01
    bw (KiB/s) : min=    0, max=251616, per=97.01%, avg=239412.71, stdev=42596.55
  write: io=4,096MiB, bw=5,283KiB/s, iops=330, runt=793813msec
    clat (usec): min=13, max=8,470K, avg=2930.95, stdev=67617.51
    bw (KiB/s) : min=    0, max=47332, per=146.18%, avg=7722.53, stdev=6510.82
  cpu          : usr=3.73%, sys=0.51%, ctx=83315, majf=1, minf=2102328
  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=90.29%, 50=6.40%, 100=0.15%, 250=0.21%, 500=0.07%
     lat (usec): 750=0.11%, 1000=0.13%
     lat (msec): 2=0.56%, 4=0.77%, 10=0.55%, 20=0.06%, 50=0.04%
     lat (msec): 100=0.44%, 250=0.14%, 500=0.03%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%, >=2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=27282
  read : io=4,037MiB, bw=165MiB/s, iops=10,584, runt= 24411msec
    clat (usec): min=2, max=197, avg=12.57, stdev= 3.09
    bw (KiB/s) : min=    0, max=251072, per=97.93%, avg=165857.31, stdev=41449.97
  write: io=1,024MiB, bw=51,562KiB/s, iops=3,222, runt= 20336msec
    clat (usec): min=5, max=119, avg=16.76, stdev= 2.95
    bw (KiB/s) : min=    0, max=54304, per=97.60%, avg=50324.85, stdev=8121.22
  cpu          : usr=5.76%, sys=0.55%, ctx=1643, majf=0, minf=1113541
  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=258378/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.65%, 20=84.16%, 50=2.17%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=241MiB/s, minb=241MiB/s, maxb=241MiB/s, mint=16996msec, maxt=16996msec
  WRITE: io=4,096MiB, aggrb=5,283KiB/s, minb=5,283KiB/s, maxb=5,283KiB/s, mint=793813msec, maxt=793813msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=165MiB/s, minb=165MiB/s, maxb=165MiB/s, mint=24411msec, maxt=24411msec
  WRITE: io=1,024MiB, aggrb=51,562KiB/s, minb=51,562KiB/s, maxb=51,562KiB/s, mint=20336msec, maxt=20336msec

Disk stats (read/write):
  sda: ios=16498/75106, merge=942/1221074, ticks=852309/275514124, in_queue=276366382, util=97.58%
67.07user 29.39system 32:02.99elapsed 5%CPU (0avgtext+0avgdata 16861648maxresident)k
8390672inputs+18757304outputs (7major+3223723minor)pagefaults 0swaps