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] [  5900/  9376 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [13.3% done] [ 16728/   700 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [15.6% done] [  6984/  9712 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [18.2% done] [ 12496/  1796 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [21.2% done] [ 10512/  3240 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [21.6% done] [  4916/  7552 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.0% done] [  8916/  4580 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  6818/  4840 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  6812/  6120 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  6936/  5128 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [  3952/  7728 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  7320/  4416 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  4620/  6328 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.0% done] [  4660/  6844 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  3004/  6976 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  3496/  5916 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  7988/     0 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  3820/  4448 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.8% done] [  2536/  6712 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.4% done] [  2132/  6124 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.5% done] [  4400/  3548 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3736, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [54.5% done] [  5180/   840 kb/s] [eta 00m:20s]
fio: pid=3735, got signal=6
Threads: 1: [m__] [59.5% done] [  6272/  2504 kb/s] [eta 00m:17s]
Threads: 1: [m__] [66.7% done] [  4260/  4436 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3734, got signal=6

fio: (groupid=0): err= 0: pid=3734
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.6%, 4=35.2%, 8=61.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.4%, 10=2.2%, 20=7.2%, 50=31.7%, 100=12.8%
     lat (msec): 250=30.8%, 500=11.7%, 750=0.7%, 1000=1.1%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=3735
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.7%, 4=25.9%, 8=72.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.7%, 20=2.2%, 50=16.4%, 100=25.9%
     lat (msec): 250=49.5%, 500=3.6%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3736
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.0%, 4=30.6%, 8=67.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.4%, 20=2.7%, 50=14.4%, 100=27.7%
     lat (msec): 250=48.1%, 500=4.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3022/2730, merge=224/478, ticks=49144/53112, in_queue=102252, util=98.68%
0.26user 0.45system 0:27.41elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps