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] [  5802/ 11211 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [11.4% done] [  2985/ 14435 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.8% done] [  1800/ 13580 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [15.0% done] [     0/ 16221 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [16.7% done] [  8171/  5168 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [20.0% done] [ 10345/  3035 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [23.7% done] [  7781/  7062 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.8% done] [  2998/  9646 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  7025/  5351 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [31.6% done] [  7480/  5495 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [ 11515/   674 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  6213/  5217 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  8716/  2131 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  9402/   898 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  3953/  7046 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.9% done] [  4283/  4559 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.3% done] [  8712/   280 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3726/  4555 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.7% done] [  3019/  5022 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.8% done] [  6046/   564 kb/s] [eta 00m:24s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2670, got signal=6
fio: pid=2671, got signal=6
Threads: 1: [m__] [50.0% done] [  1792/  6257 kb/s] [eta 00m:23s]
Threads: 1: [m__] [57.1% done] [  3173/  6326 kb/s] [eta 00m:18s]
Threads: 1: [m__] [62.5% done] [  3649/  5737 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] [  2129/  5095 kb/s] [eta 00m:13s]
fio: pid=2663, got signal=6

fio: (groupid=0): err= 0: pid=2663
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.3%, 4=35.1%, 8=61.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.9%, 10=1.3%, 20=8.3%, 50=34.3%, 100=12.1%
     lat (msec): 250=24.8%, 500=13.7%, 750=1.9%, 1000=0.4%, >=2000=0.6%
fio: (groupid=0): err= 0: pid=2670
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=25.7%, 8=71.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.3%, 10=1.0%, 20=2.7%, 50=20.1%, 100=22.6%
     lat (msec): 250=47.3%, 500=5.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2671
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.4%, 4=31.5%, 8=65.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.4%, 10=0.4%, 20=4.4%, 50=18.3%, 100=27.1%
     lat (msec): 250=43.2%, 500=4.5%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2752/3264, merge=528/1779, ticks=50848/91116, in_queue=141960, util=97.21%
0.24user 0.31system 0:27.77elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2499minor)pagefaults 0swaps