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=5955
  read : io=4,096MiB, bw=237MiB/s, iops=15,196, runt= 17250msec
    clat (usec): min=10, max=168, avg=13.50, stdev= 2.56
    bw (KiB/s) : min=    0, max=249984, per=97.12%, avg=236149.03, stdev=41654.79
  write: io=4,096MiB, bw=18,813KiB/s, iops=1,175, runt=222943msec
    clat (usec): min=13, max=941K, avg=647.10, stdev=11518.54
    bw (KiB/s) : min=    0, max=88128, per=108.82%, avg=20472.78, stdev=22141.25
  cpu          : usr=30.44%, sys=3.30%, ctx=17012, majf=1, 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=52.34%, 50=44.15%, 100=0.26%, 250=1.57%, 500=0.26%
     lat (usec): 750=0.21%, 1000=0.25%
     lat (msec): 2=0.41%, 4=0.07%, 10=0.14%, 20=0.11%, 50=0.07%
     lat (msec): 100=0.07%, 250=0.07%, 500=0.02%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6064
  read : io=4,038MiB, bw=152MiB/s, iops=9,710, runt= 26612msec
    clat (usec): min=2, max=1,130, avg=14.87, stdev= 5.01
    bw (KiB/s) : min=    0, max=243808, per=99.88%, avg=155186.69, stdev=41992.65
  write: io=1,024MiB, bw=47,972KiB/s, iops=2,998, runt= 21858msec
    clat (usec): min=3, max=961K, avg=33.43, stdev=3753.40
    bw (KiB/s) : min=    0, max=52608, per=99.91%, avg=47931.19, stdev=9327.53
  cpu          : usr=6.82%, sys=1.05%, ctx=12556, majf=0, minf=1115271
  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=258412/65536, short=0/0
     lat (usec): 4=0.01%, 10=9.15%, 20=77.73%, 50=13.06%, 100=0.03%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 2=0.01%, 1000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=237MiB/s, minb=237MiB/s, maxb=237MiB/s, mint=17250msec, maxt=17250msec
  WRITE: io=4,096MiB, aggrb=18,813KiB/s, minb=18,813KiB/s, maxb=18,813KiB/s, mint=222943msec, maxt=222943msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=152MiB/s, minb=152MiB/s, maxb=152MiB/s, mint=26612msec, maxt=26612msec
  WRITE: io=1,024MiB, aggrb=47,973KiB/s, minb=47,973KiB/s, maxb=47,973KiB/s, mint=21858msec, maxt=21858msec

Disk stats (read/write):
  sda: ios=16733/62664, merge=708/1233871, ticks=265974/115571500, in_queue=115837378, util=92.72%
97.75user 49.04system 12:19.70elapsed 19%CPU (0avgtext+0avgdata 16861248maxresident)k
8389720inputs+18761912outputs (3major+3221509minor)pagefaults 0swaps