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=22002
  read : io=4,096MiB, bw=212MiB/s, iops=13,546, runt= 19351msec
    clat (usec): min=12, max=1,102, avg=17.44, stdev= 5.07
    bw (KiB/s) : min=    0, max=243904, per=97.35%, avg=211017.85, stdev=53347.32
  write: io=4,096MiB, bw=18,020KiB/s, iops=1,126, runt=232746msec
    clat (usec): min=16, max=770K, avg=670.97, stdev=7289.79
    bw (KiB/s) : min=    0, max=66304, per=101.85%, avg=18353.93, stdev=16534.27
  cpu          : usr=30.72%, sys=4.77%, ctx=16834, majf=0, 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=47.01%, 50=46.07%, 100=3.52%, 250=0.32%, 500=1.11%
     lat (usec): 750=0.09%, 1000=0.22%
     lat (msec): 2=0.75%, 4=0.22%, 10=0.18%, 20=0.13%, 50=0.16%
     lat (msec): 100=0.16%, 250=0.06%, 500=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=22289
  read : io=4,039MiB, bw=36,234KiB/s, iops=2,264, runt=114132msec
    clat (usec): min=2, max=1,106, avg=23.18, stdev=11.95
    bw (KiB/s) : min=    0, max=232832, per=212.39%, avg=76959.13, stdev=68325.00
  write: io=1,024MiB, bw=9,627KiB/s, iops=601, runt=108910msec
    clat (usec): min=3, max=3,490K, avg=1182.80, stdev=51013.43
    bw (KiB/s) : min=    0, max=49856, per=220.14%, avg=21193.13, stdev=19216.23
  cpu          : usr=11.22%, sys=2.52%, ctx=23228, majf=0, minf=1128221
  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=258467/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.46%, 20=35.24%, 50=55.23%, 100=5.00%
     lat (usec): 250=0.05%, 500=0.01%, 750=0.01%, 1000=0.01%
     lat (msec): 2=0.01%, 2000=0.01%, >=2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=212MiB/s, minb=212MiB/s, maxb=212MiB/s, mint=19351msec, maxt=19351msec
  WRITE: io=4,096MiB, aggrb=18,021KiB/s, minb=18,021KiB/s, maxb=18,021KiB/s, mint=232746msec, maxt=232746msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=36,234KiB/s, minb=36,234KiB/s, maxb=36,234KiB/s, mint=114132msec, maxt=114132msec
  WRITE: io=1,024MiB, aggrb=9,627KiB/s, minb=9,627KiB/s, maxb=9,627KiB/s, mint=108910msec, maxt=108910msec

Disk stats (read/write):
  sda: ios=18409/62603, merge=14386/1235997, ticks=253612/51162976, in_queue=51416547, util=92.60%
112.57user 69.70system 11:51.26elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
8390224inputs+18872096outputs (31major+3234302minor)pagefaults 0swaps