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=31568
  read : io=4,096MiB, bw=240MiB/s, iops=15,337, runt= 17092msec
    clat (usec): min=11, max=161, avg=12.86, stdev= 1.91
    bw (KiB/s) : min=    0, max=247808, per=97.18%, avg=238473.14, stdev=41744.83
  write: io=4,096MiB, bw=19,458KiB/s, iops=1,216, runt=215552msec
    clat (usec): min=14, max=1,077K, avg=630.52, stdev=11553.88
    bw (KiB/s) : min=    0, max=82688, per=109.23%, avg=21254.44, stdev=23937.52
  cpu          : usr=29.75%, sys=3.58%, ctx=29089, 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=52.21%, 50=44.21%, 100=0.31%, 250=1.22%, 500=0.43%
     lat (usec): 750=0.27%, 1000=0.36%
     lat (msec): 2=0.48%, 4=0.07%, 10=0.13%, 20=0.09%, 50=0.07%
     lat (msec): 100=0.06%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=31646
  read : io=4,038MiB, bw=158MiB/s, iops=10,116, runt= 25544msec
    clat (usec): min=2, max=235, avg=15.50, stdev= 3.57
    bw (KiB/s) : min=    0, max=245984, per=98.03%, avg=158670.43, stdev=42804.15
  write: io=1,024MiB, bw=48,841KiB/s, iops=3,052, runt= 21469msec
    clat (usec): min=2, max=236, avg=20.58, stdev= 3.75
    bw (KiB/s) : min=    0, max=52352, per=97.46%, avg=47599.51, stdev=8271.74
  cpu          : usr=6.80%, sys=0.97%, ctx=8176, majf=0, minf=1114847
  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=258409/65536, short=0/0
     lat (usec): 4=0.01%, 10=1.57%, 20=77.87%, 50=20.54%, 100=0.01%
     lat (usec): 250=0.01%


Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=240MiB/s, minb=240MiB/s, maxb=240MiB/s, mint=17092msec, maxt=17092msec
  WRITE: io=4,096MiB, aggrb=19,458KiB/s, minb=19,458KiB/s, maxb=19,458KiB/s, mint=215552msec, maxt=215552msec

Run status group 1 (all jobs):
   READ: io=4,038MiB, aggrb=158MiB/s, minb=158MiB/s, maxb=158MiB/s, mint=25544msec, maxt=25544msec
  WRITE: io=1,024MiB, aggrb=48,841KiB/s, minb=48,841KiB/s, maxb=48,841KiB/s, mint=21469msec, maxt=21469msec

Disk stats (read/write):
  sda: ios=16786/62770, merge=655/1233657, ticks=261307/116509777, in_queue=116770992, util=92.98%
94.50user 61.35system 12:21.78elapsed 21%CPU (0avgtext+0avgdata 16861280maxresident)k
8390776inputs+18761432outputs (9major+3221065minor)pagefaults 0swaps