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=5713
  read : io=4,096MiB, bw=229MiB/s, iops=14,645, runt= 17899msec
    clat (usec): min=12, max=119, avg=16.06, stdev= 2.57
    bw (KiB/s) : min=    0, max=244448, per=97.28%, avg=227965.33, stdev=39801.19
  write: io=4,096MiB, bw=15,866KiB/s, iops=991, runt=264342msec
    clat (usec): min=16, max=419K, avg=768.43, stdev=7712.37
    bw (KiB/s) : min=    0, max=71648, per=101.55%, avg=16112.71, stdev=11920.80
  cpu          : usr=27.46%, sys=4.19%, ctx=17497, majf=1, minf=2102313
  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=49.56%, 50=44.67%, 100=2.42%, 250=0.49%, 500=0.94%
     lat (usec): 750=0.16%, 1000=0.13%
     lat (msec): 2=0.38%, 4=0.36%, 10=0.27%, 20=0.16%, 50=0.20%
     lat (msec): 100=0.17%, 250=0.07%, 500=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=6019
  read : io=4,036MiB, bw=159MiB/s, iops=10,154, runt= 25435msec
    clat (usec): min=2, max=387, avg=15.25, stdev= 4.13
    bw (KiB/s) : min=    0, max=242976, per=97.75%, avg=158816.63, stdev=38813.22
  write: io=1,024MiB, bw=49,444KiB/s, iops=3,090, runt= 21207msec
    clat (usec): min=3, max=192, avg=19.97, stdev= 4.28
    bw (KiB/s) : min=    0, max=51872, per=97.62%, avg=48268.60, stdev=7660.34
  cpu          : usr=6.65%, sys=1.16%, ctx=1340, majf=0, minf=1117586
  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=258283/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.47%, 20=75.63%, 50=15.86%, 100=0.02%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=229MiB/s, minb=229MiB/s, maxb=229MiB/s, mint=17899msec, maxt=17899msec
  WRITE: io=4,096MiB, aggrb=15,866KiB/s, minb=15,866KiB/s, maxb=15,866KiB/s, mint=264342msec, maxt=264342msec

Run status group 1 (all jobs):
   READ: io=4,036MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25435msec, maxt=25435msec
  WRITE: io=1,024MiB, aggrb=49,447KiB/s, minb=49,447KiB/s, maxb=49,447KiB/s, mint=21207msec, maxt=21207msec

Disk stats (read/write):
  sda: ios=17057/62972, merge=383/1233734, ticks=420547/111891267, in_queue=112311677, util=94.60%
105.46user 53.98system 12:41.18elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k
8390984inputs+18784912outputs (9major+3224058minor)pagefaults 0swaps