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] [6.4% done] [  4800/ 13044 kb/s] [eta 00m:44s]
Threads: 3: [mmm] [9.8% done] [ 12362/  3367 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [11.9% done] [  9538/  5033 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [14.6% done] [  8999/  4513 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [16.7% done] [  8034/  5793 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [19.0% done] [  6336/  8723 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [20.9% done] [  4478/  7620 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [23.8% done] [  8928/  2922 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [26.2% done] [ 10413/  2485 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [29.3% done] [  6628/  5608 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.0% done] [  8948/  2619 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [33.3% done] [  6096/  5738 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  3072/  6809 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [37.2% done] [  4923/  5368 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [39.5% done] [  4501/  5600 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.9% done] [  5466/  3158 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [43.2% done] [  5966/  2623 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.4% done] [  4257/  3887 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.7% done] [  6195/  1398 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25372, got signal=6
Threads: 2: [m_m] [51.1% done] [  2063/  7179 kb/s] [eta 00m:22s]
Threads: 2: [m_m] [54.5% done] [  5628/  2260 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [58.1% done] [  3997/  3792 kb/s] [eta 00m:18s]
Threads: 2: [m_m] [60.5% done] [  2938/  4131 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25373, got signal=6
Threads: 1: [m__] [65.9% done] [  3706/  3958 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25371, got signal=6

fio: (groupid=0): err= 0: pid=25371
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.5%, 4=37.1%, 8=57.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=2.0%, 4=0.0%, 10=0.8%, 20=7.6%, 50=25.1%, 100=18.2%
     lat (msec): 250=33.8%, 500=9.7%, 750=2.1%, 1000=0.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=25372
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.8%, 4=34.9%, 8=61.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.2%, 20=3.3%, 50=16.4%, 100=29.8%
     lat (msec): 250=46.9%, 500=2.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25373
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.4%, 4=33.0%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.5%, 20=2.9%, 50=10.7%, 100=27.7%
     lat (msec): 250=51.5%, 500=5.1%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3199/2605, merge=431/212, ticks=53764/48108, in_queue=101864, util=98.78%
0.28user 0.45system 0:27.94elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps