fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [8.6% done] [ 11484/  5352 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.1% done] [  8576/  7444 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [ 13144/  3548 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [ 11112/  1916 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.0% done] [  9816/  3676 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [ 10560/  3584 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [ 10368/  2308 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [ 11068/  1012 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  8480/  4168 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  8316/  2068 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6244/  7532 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  4836/  7856 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  7644/  3200 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  7376/  3632 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  5312/  4660 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5556/  3748 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  3480/  5920 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  3696/  4064 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5756/  2160 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  2936/  5392 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31568, got signal=6
Threads: 2: [m_m] [53.5% done] [  2980/  5088 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31569, got signal=6
Threads: 1: [m__] [57.1% done] [  2020/  5152 kb/s] [eta 00m:18s]
Threads: 1: [m__] [62.5% done] [  5632/  3600 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  6480/   824 kb/s] [eta 00m:13s]
fio: pid=31567, got signal=6

fio: (groupid=0): err= 0: pid=31567
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=3.8%, 4=36.6%, 8=58.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.1%, 10=2.4%, 20=4.7%, 50=31.9%, 100=10.9%
     lat (msec): 250=33.4%, 500=13.0%, 750=1.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31568
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.8%, 4=28.5%, 8=68.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=1.4%, 20=2.4%, 50=16.1%, 100=18.7%
     lat (msec): 250=58.2%, 500=2.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31569
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=34.5%, 8=62.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.5%, 20=3.7%, 50=14.6%, 100=27.8%
     lat (msec): 250=47.3%, 500=3.6%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3356/2335, merge=621/230, ticks=57660/58104, in_queue=115760, util=98.95%
0.28user 0.30system 0:27.04elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps