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] [8.1% done] [ 10745/  4120 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [12.5% done] [  8964/  8248 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [13.9% done] [  8744/  7084 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  9316/  4328 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  8644/  5468 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [  5264/  8240 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [ 10444/  1512 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  4912/  8092 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  8812/  3128 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  6128/  6440 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  8560/  2600 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  5152/  6896 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  6464/  4476 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [37.2% done] [  7576/  2508 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [39.5% done] [ 10104/    44 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [41.9% done] [  4452/  6088 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [44.2% done] [  7948/  1000 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  7576/  1452 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3520/  4440 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  5260/  2256 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  3032/  4156 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=713, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=712, got signal=6
Threads: 1: [m__] [52.2% done] [  2484/  4444 kb/s] [eta 00m:22s]
Threads: 1: [m__] [59.5% done] [  4512/  5908 kb/s] [eta 00m:17s]
Threads: 1: [m__] [63.4% done] [  6684/  1172 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=711, got signal=6

fio: (groupid=0): err= 0: pid=711
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.1%, 4=33.8%, 8=63.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.2%, 10=1.9%, 20=3.7%, 50=36.0%, 100=7.8%
     lat (msec): 250=36.0%, 500=11.8%, 750=1.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=712
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.9%, 4=33.1%, 8=64.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.8%, 20=2.8%, 50=12.3%, 100=26.7%
     lat (msec): 250=51.3%, 500=5.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=713
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.2%, 4=32.4%, 8=63.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.3%, 20=1.7%, 50=12.2%, 100=28.5%
     lat (msec): 250=51.6%, 500=3.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3477/2250, merge=416/248, ticks=60840/41388, in_queue=102224, util=98.73%
0.26user 0.43system 0:27.71elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps