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=2106
  read : io=4,096MiB, bw=238MiB/s, iops=15,236, runt= 17205msec
    clat (usec): min=11, max=144, avg=13.28, stdev= 2.10
    bw (KiB/s) : min=    0, max=247392, per=97.13%, avg=236804.57, stdev=41549.20
  write: io=4,096MiB, bw=20,780KiB/s, iops=1,298, runt=201834msec
    clat (usec): min=14, max=526K, avg=539.65, stdev=5998.68
    bw (KiB/s) : min=    0, max=79360, per=100.96%, avg=20979.74, stdev=13644.56
  cpu          : usr=31.59%, sys=4.74%, ctx=132258, majf=1, minf=2102341
  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=50.83%, 50=45.53%, 100=0.35%, 250=1.76%, 500=0.18%
     lat (usec): 750=0.10%, 1000=0.13%
     lat (msec): 2=0.20%, 4=0.12%, 10=0.27%, 20=0.19%, 50=0.18%
     lat (msec): 100=0.12%, 250=0.04%, 500=0.01%, 750=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=2188
  read : io=4,036MiB, bw=159MiB/s, iops=10,155, runt= 25433msec
    clat (usec): min=2, max=281, avg=15.05, stdev= 4.05
    bw (KiB/s) : min=    0, max=247584, per=97.92%, avg=159106.51, stdev=43927.56
  write: io=1,024MiB, bw=49,148KiB/s, iops=3,071, runt= 21335msec
    clat (usec): min=3, max=237, avg=19.89, stdev= 4.27
    bw (KiB/s) : min=    0, max=52800, per=97.66%, avg=47997.70, stdev=8545.22
  cpu          : usr=7.20%, sys=1.22%, ctx=31830, majf=0, minf=1113545
  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=258291/65536, short=0/0
     lat (usec): 4=0.01%, 10=5.73%, 20=75.78%, 50=18.47%, 100=0.01%
     lat (usec): 250=0.01%, 500=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=238MiB/s, minb=238MiB/s, maxb=238MiB/s, mint=17205msec, maxt=17205msec
  WRITE: io=4,096MiB, aggrb=20,780KiB/s, minb=20,780KiB/s, maxb=20,780KiB/s, mint=201834msec, maxt=201834msec

Run status group 1 (all jobs):
   READ: io=4,036MiB, aggrb=159MiB/s, minb=159MiB/s, maxb=159MiB/s, mint=25433msec, maxt=25433msec
  WRITE: io=1,024MiB, aggrb=49,148KiB/s, minb=49,148KiB/s, maxb=49,148KiB/s, mint=21335msec, maxt=21335msec

Disk stats (read/write):
  sda: ios=16669/62819, merge=770/1225410, ticks=241576/107215471, in_queue=107458473, util=93.16%
105.38user 45.07system 12:19.59elapsed 20%CPU (0avgtext+0avgdata 16861264maxresident)k
8390832inputs+18758280outputs (8major+3219800minor)pagefaults 0swaps