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=11195
  read : io=4,096MiB, bw=236MiB/s, iops=15,096, runt= 17364msec
    clat (usec): min=11, max=341, avg=13.94, stdev= 2.60
    bw (KiB/s) : min=    0, max=247328, per=97.11%, avg=234583.77, stdev=41375.21
  write: io=4,096MiB, bw=19,569KiB/s, iops=1,223, runt=214328msec
    clat (usec): min=14, max=781K, avg=619.94, stdev=10863.11
    bw (KiB/s) : min=    0, max=80800, per=107.20%, avg=20978.57, stdev=22750.98
  cpu          : usr=30.23%, sys=3.66%, ctx=26137, 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=51.24%, 50=45.23%, 100=0.27%, 250=1.43%, 500=0.28%
     lat (usec): 750=0.25%, 1000=0.34%
     lat (msec): 2=0.42%, 4=0.06%, 10=0.14%, 20=0.11%, 50=0.08%
     lat (msec): 100=0.07%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=11376
  read : io=4,037MiB, bw=152MiB/s, iops=9,737, runt= 26532msec
    clat (usec): min=2, max=139, avg=15.19, stdev= 3.75
    bw (KiB/s) : min=    0, max=247072, per=101.03%, avg=157408.37, stdev=44840.88
  write: io=1,024MiB, bw=46,671KiB/s, iops=2,916, runt= 22467msec
    clat (usec): min=3, max=1,155K, avg=37.60, stdev=4511.04
    bw (KiB/s) : min=    0, max=51552, per=100.91%, avg=47096.93, stdev=9462.53
  cpu          : usr=6.75%, sys=0.90%, ctx=10462, majf=0, minf=1113623
  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=258367/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.55%, 20=77.84%, 50=17.58%, 100=0.01%
     lat (usec): 250=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=17364msec, maxt=17364msec
  WRITE: io=4,096MiB, aggrb=19,569KiB/s, minb=19,569KiB/s, maxb=19,569KiB/s, mint=214328msec, maxt=214328msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=152MiB/s, minb=152MiB/s, maxb=152MiB/s, mint=26532msec, maxt=26532msec
  WRITE: io=1,024MiB, aggrb=46,672KiB/s, minb=46,672KiB/s, maxb=46,672KiB/s, mint=22467msec, maxt=22467msec

Disk stats (read/write):
  sda: ios=16730/64025, merge=711/1232184, ticks=261794/115176379, in_queue=115438071, util=92.96%
96.02user 51.36system 12:17.01elapsed 19%CPU (0avgtext+0avgdata 16861280maxresident)k
8390648inputs+18759672outputs (8major+3219848minor)pagefaults 0swaps