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=31296
  read : io=4,096MiB, bw=235MiB/s, iops=15,043, runt= 17426msec
    clat (usec): min=11, max=218, avg=14.05, stdev= 2.39
    bw (KiB/s) : min=    0, max=246592, per=97.10%, avg=233717.94, stdev=41202.23
  write: io=4,096MiB, bw=19,755KiB/s, iops=1,234, runt=212306msec
    clat (usec): min=15, max=918K, avg=571.42, stdev=8047.19
    bw (KiB/s) : min=    0, max=77856, per=103.39%, avg=20425.64, stdev=14618.45
  cpu          : usr=32.36%, sys=4.98%, ctx=66021, 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=49.77%, 50=45.63%, 100=1.27%, 250=1.63%, 500=0.38%
     lat (usec): 750=0.10%, 1000=0.10%
     lat (msec): 2=0.14%, 4=0.15%, 10=0.31%, 20=0.21%, 50=0.18%
     lat (msec): 100=0.09%, 250=0.04%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=31598
  read : io=4,039MiB, bw=153MiB/s, iops=9,782, runt= 26422msec
    clat (usec): min=2, max=227, avg=15.58, stdev= 3.65
    bw (KiB/s) : min=    0, max=245856, per=99.59%, avg=155875.37, stdev=44263.79
  write: io=1,024MiB, bw=47,271KiB/s, iops=2,954, runt= 22182msec
    clat (usec): min=2, max=960K, avg=34.70, stdev=3748.22
    bw (KiB/s) : min=    0, max=51520, per=99.96%, avg=47251.23, stdev=10232.96
  cpu          : usr=7.15%, sys=1.00%, ctx=18563, majf=0, minf=1114613
  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=258474/65536, short=0/0
     lat (usec): 4=0.01%, 10=4.39%, 20=77.34%, 50=18.25%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 1000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=235MiB/s, minb=235MiB/s, maxb=235MiB/s, mint=17426msec, maxt=17426msec
  WRITE: io=4,096MiB, aggrb=19,755KiB/s, minb=19,755KiB/s, maxb=19,755KiB/s, mint=212306msec, maxt=212306msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=153MiB/s, minb=153MiB/s, maxb=153MiB/s, mint=26422msec, maxt=26422msec
  WRITE: io=1,024MiB, aggrb=47,272KiB/s, minb=47,272KiB/s, maxb=47,272KiB/s, mint=22182msec, maxt=22182msec

Disk stats (read/write):
  sda: ios=17229/67923, merge=212/1228776, ticks=238650/114719609, in_queue=114958161, util=93.17%
107.66user 52.76system 11:25.34elapsed 23%CPU (0avgtext+0avgdata 16861728maxresident)k
8390352inputs+18763488outputs (7major+3220844minor)pagefaults 0swaps