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=8389
  read : io=4,096MiB, bw=243MiB/s, iops=15,555, runt= 16852msec
    clat (usec): min=10, max=148, avg=12.03, stdev= 1.62
    bw (KiB/s) : min=    0, max=251264, per=97.14%, avg=241772.24, stdev=42871.92
  write: io=4,096MiB, bw=20,710KiB/s, iops=1,294, runt=202523msec
    clat (usec): min=14, max=523K, avg=675.86, stdev=6798.65
    bw (KiB/s) : min=    0, max=68288, per=102.88%, avg=21307.20, stdev=20803.93
  cpu          : usr=18.79%, sys=2.25%, ctx=21315, majf=0, minf=2102331
  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=88.76%, 50=7.86%, 100=0.11%, 250=0.05%, 500=0.04%
     lat (usec): 750=0.01%, 1000=0.02%
     lat (msec): 2=1.07%, 4=1.40%, 10=0.17%, 20=0.12%, 50=0.16%
     lat (msec): 100=0.16%, 250=0.05%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=8597
  read : io=4,037MiB, bw=156MiB/s, iops=9,982, runt= 25883msec
    clat (usec): min=2, max=353, avg=16.93, stdev= 5.03
    bw (KiB/s) : min=    0, max=234880, per=97.70%, avg=156046.15, stdev=38766.46
  write: io=1,024MiB, bw=48,511KiB/s, iops=3,031, runt= 21615msec
    clat (usec): min=3, max=214, avg=22.11, stdev= 4.98
    bw (KiB/s) : min=    0, max=50400, per=97.80%, avg=47445.82, stdev=7385.50
  cpu          : usr=7.10%, sys=1.10%, ctx=1944, majf=0, minf=1114711
  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=258373/65536, short=0/0
     lat (usec): 4=0.01%, 10=13.35%, 20=43.63%, 50=42.94%, 100=0.06%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=243MiB/s, minb=243MiB/s, maxb=243MiB/s, mint=16852msec, maxt=16852msec
  WRITE: io=4,096MiB, aggrb=20,710KiB/s, minb=20,710KiB/s, maxb=20,710KiB/s, mint=202523msec, maxt=202523msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=156MiB/s, minb=156MiB/s, maxb=156MiB/s, mint=25883msec, maxt=25883msec
  WRITE: io=1,024MiB, aggrb=48,513KiB/s, minb=48,513KiB/s, maxb=48,513KiB/s, mint=21615msec, maxt=21615msec

Disk stats (read/write):
  sda: ios=17444/62880, merge=0/1234028, ticks=219861/91035118, in_queue=91254969, util=92.70%
66.78user 28.47system 10:55.61elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
8390672inputs+18767104outputs (32major+3220792minor)pagefaults 0swaps