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=5963
  read : io=4,096MiB, bw=230MiB/s, iops=14,745, runt= 17778msec
    clat (usec): min=11, max=100, avg=15.65, stdev= 1.98
    bw (KiB/s) : min=    0, max=248320, per=97.25%, avg=229435.56, stdev=39715.55
  write: io=4,096MiB, bw=19,280KiB/s, iops=1,205, runt=217539msec
    clat (usec): min=14, max=818K, avg=635.57, stdev=11438.62
    bw (KiB/s) : min=    0, max=82880, per=108.52%, avg=20923.43, stdev=23007.15
  cpu          : usr=30.02%, sys=3.53%, ctx=21925, 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=50.94%, 50=45.50%, 100=0.29%, 250=1.36%, 500=0.31%
     lat (usec): 750=0.26%, 1000=0.34%
     lat (msec): 2=0.45%, 4=0.08%, 10=0.14%, 20=0.11%, 50=0.07%
     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=6059
  read : io=4,038MiB, bw=158MiB/s, iops=10,119, runt= 25536msec
    clat (usec): min=2, max=224, avg=13.61, stdev= 3.64
    bw (KiB/s) : min=    0, max=247008, per=97.74%, avg=158247.53, stdev=46651.72
  write: io=1,024MiB, bw=49,102KiB/s, iops=3,068, runt= 21355msec
    clat (usec): min=3, max=351K, avg=23.51, stdev=1371.00
    bw (KiB/s) : min=    0, max=52864, per=97.66%, avg=47954.42, stdev=10322.51
  cpu          : usr=7.48%, sys=1.17%, ctx=20656, majf=0, minf=1114308
  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=258403/65536, short=0/0
     lat (usec): 4=0.01%, 10=10.95%, 20=82.16%, 50=6.86%, 100=0.02%
     lat (usec): 250=0.01%, 500=0.01%
     lat (msec): 500=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17778msec, maxt=17778msec
  WRITE: io=4,096MiB, aggrb=19,280KiB/s, minb=19,280KiB/s, maxb=19,280KiB/s, mint=217539msec, maxt=217539msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=158MiB/s, minb=158MiB/s, maxb=158MiB/s, mint=25536msec, maxt=25536msec
  WRITE: io=1,024MiB, aggrb=49,103KiB/s, minb=49,103KiB/s, maxb=49,103KiB/s, mint=21355msec, maxt=21355msec

Disk stats (read/write):
  sda: ios=16735/65085, merge=706/1231279, ticks=261347/102710141, in_queue=102971382, util=92.51%
95.36user 51.96system 11:40.46elapsed 21%CPU (0avgtext+0avgdata 16861280maxresident)k
8389440inputs+18760824outputs (3major+3220396minor)pagefaults 0swaps