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=3919
  read : io=4,096MiB, bw=234MiB/s, iops=14,956, runt= 17527msec
    clat (usec): min=11, max=155, avg=14.51, stdev= 2.67
    bw (KiB/s) : min=    0, max=247200, per=97.22%, avg=232667.56, stdev=40520.38
  write: io=4,096MiB, bw=20,356KiB/s, iops=1,272, runt=206043msec
    clat (usec): min=15, max=797K, avg=555.71, stdev=9314.30
    bw (KiB/s) : min=    0, max=78944, per=105.91%, avg=21558.72, stdev=18083.33
  cpu          : usr=31.18%, sys=4.83%, ctx=52606, majf=1, minf=2102310
  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=49.94%, 50=45.94%, 100=0.79%, 250=1.69%, 500=0.33%
     lat (usec): 750=0.11%, 1000=0.15%
     lat (msec): 2=0.20%, 4=0.15%, 10=0.28%, 20=0.18%, 50=0.15%
     lat (msec): 100=0.06%, 250=0.03%, 500=0.01%, 750=0.01%, 1000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=4242
  read : io=4,037MiB, bw=155MiB/s, iops=9,931, runt= 26017msec
    clat (usec): min=2, max=142, avg=14.93, stdev= 3.78
    bw (KiB/s) : min=    0, max=245952, per=98.78%, avg=156977.04, stdev=44012.51
  write: io=1,024MiB, bw=48,137KiB/s, iops=3,008, runt= 21783msec
    clat (usec): min=2, max=653K, avg=29.16, stdev=2551.53
    bw (KiB/s) : min=    0, max=52224, per=98.75%, avg=47535.95, stdev=10106.94
  cpu          : usr=6.77%, sys=0.99%, ctx=11894, majf=0, minf=1113859
  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=258393/65536, short=0/0
     lat (usec): 4=0.01%, 10=8.26%, 20=77.47%, 50=14.24%, 100=0.01%
     lat (usec): 250=0.01%
     lat (msec): 750=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=234MiB/s, minb=234MiB/s, maxb=234MiB/s, mint=17527msec, maxt=17527msec
  WRITE: io=4,096MiB, aggrb=20,356KiB/s, minb=20,356KiB/s, maxb=20,356KiB/s, mint=206043msec, maxt=206043msec

Run status group 1 (all jobs):
   READ: io=4,037MiB, aggrb=155MiB/s, minb=155MiB/s, maxb=155MiB/s, mint=26017msec, maxt=26017msec
  WRITE: io=1,024MiB, aggrb=48,139KiB/s, minb=48,139KiB/s, maxb=48,139KiB/s, mint=21783msec, maxt=21783msec

Disk stats (read/write):
  sda: ios=17245/66551, merge=197/1229853, ticks=246781/121544213, in_queue=121790865, util=93.31%
105.22user 53.02system 12:37.49elapsed 20%CPU (0avgtext+0avgdata 16861728maxresident)k
8390656inputs+18761208outputs (8major+3220166minor)pagefaults 0swaps