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] [9.4% done] [  8316/  9856 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [11.4% done] [  9928/  6020 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [ 13608/  2928 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [  7052/  8568 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [ 10800/  2876 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.5% done] [  6228/  5892 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.3% done] [  5608/  7440 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [29.4% done] [  5508/  7048 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [33.3% done] [  6105/  6918 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [35.3% done] [  9668/  2128 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.2% done] [  9224/  2820 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [40.0% done] [ 10884/  1152 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.1% done] [  4156/  6784 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [45.7% done] [  7324/  3760 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [45.9% done] [  4884/  4464 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  3184/  6544 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  4368/  3864 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4036/  4340 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [53.8% done] [  2880/  7012 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  5828/  1868 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14477, got signal=6
Threads: 2: [m_m] [54.8% done] [  2904/  3960 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [57.1% done] [  3464/  4440 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14478, got signal=6
Threads: 1: [m__] [62.5% done] [  3964/  3980 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  5960/   876 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14476, got signal=6

fio: (groupid=0): err= 0: pid=14476
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.7%, 4=38.6%, 8=55.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.8%, 4=0.1%, 10=2.1%, 20=4.8%, 50=29.4%, 100=13.0%
     lat (msec): 250=33.1%, 500=14.7%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14477
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.5%, 4=33.7%, 8=61.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.1%, 10=1.5%, 20=3.0%, 50=15.0%, 100=26.3%
     lat (msec): 250=48.4%, 500=4.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14478
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.4%, 4=30.3%, 8=67.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=1.4%, 20=3.1%, 50=12.5%, 100=22.6%
     lat (msec): 250=54.8%, 500=4.1%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3120/2612, merge=488/397, ticks=54576/55172, in_queue=109748, util=98.61%
0.20user 0.39system 0:27.32elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2495minor)pagefaults 0swaps