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: 3
Threads: 1
Threads: 1: [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=5178
  read : io=100MiB, bw=22,357KiB/s, runt=  4690msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    1, max=54749, per=40.81%, avg=27375.00, stdev=38712.68
  write: io=75,560KiB, bw=18,141KiB/s, runt=  4265msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=    0, max=64086, per=176.63%, avg=32043.00, stdev=45315.65
  cpu          : usr=34.80%, sys=4.18%, ctx=45
  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=5179
  read : io=100MiB, bw=79,800KiB/s, runt=  1314msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=64176, max=77070, per=105.29%, avg=70623.00, stdev=9117.43
  cpu          : usr=95.59%, sys=3.65%, ctx=15
  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=5180
  read : io=100MiB, bw=110MiB/s, runt=   927msec
    clat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    bw (KiB/s) : min=114098, max=114098, per=170.11%, avg=114098.00, stdev=-1.00
  cpu          : usr=87.16%, sys=3.88%, ctx=4
  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=67,073KiB/s, minb=22,357KiB/s, maxb=110MiB/s, mint=927msec, maxt=4690msec
  WRITE: io=75,560KiB, aggrb=18,141KiB/s, minb=0KiB/s, maxb=18,141KiB/s, mint=927msec, maxt=4690msec

Disk stats (read/write):
  sda: ios=0/390, merge=0/18555, ticks=0/313712, in_queue=313712, util=58.31%
3.70user 0.29system 0:05.04elapsed 79%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+96632minor)pagefaults 0swaps