fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=mmap, iodepth=1
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=mmap, iodepth=1
Starting 3 threads
Threads: 2
Threads: 2
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=5584
  read : io=100MiB, bw=23,918KiB/s, runt=  4384msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=   29, max=   57, per=0.06%, avg=43.00, stdev=19.80
  write: io=67,372KiB, bw=17,212KiB/s, runt=  4008msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    0, max=72916, per=266.48%, avg=45866.67, stdev=39934.38
  cpu          : usr=35.31%, sys=4.20%, ctx=18
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.9%, 4=0.0%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5585
  read : io=100MiB, bw=120MiB/s, runt=   855msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=124997, max=124997, per=174.20%, avg=124997.00, stdev=-1.00
  cpu          : usr=88.89%, sys=9.82%, ctx=3
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.8%, 4=0.0%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5586
  read : io=100MiB, bw=28,846KiB/s, runt=  3635msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=64118, max=74145, per=96.35%, avg=69131.50, stdev=7090.16
  cpu          : usr=33.89%, sys=1.76%, ctx=65
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.8%, 4=0.0%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=300MiB, aggrb=71,754KiB/s, minb=23,918KiB/s, maxb=120MiB/s, mint=855msec, maxt=4384msec
  WRITE: io=67,372KiB, aggrb=17,212KiB/s, minb=0KiB/s, maxb=17,212KiB/s, mint=855msec, maxt=4384msec

Disk stats (read/write):
  sda: ios=0/504, merge=0/16365, ticks=0/326976, in_queue=326976, util=59.47%
3.54user 0.34system 0:04.71elapsed 82%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+94575minor)pagefaults 0swaps