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] [7.1% done] [ 13480/  2312 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [10.5% done] [  8752/  8532 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [14.3% done] [  4360/ 12260 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.6% done] [  9028/  5172 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.6% done] [  7600/  5140 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [22.9% done] [  7432/  5264 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  9312/  3496 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.6% done] [  7100/  5964 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  6088/  5932 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  9048/  3376 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  9976/  2656 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.8% done] [  5096/  7824 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  3076/  9296 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  4984/  5584 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  7608/  2832 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5144/  3856 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  8288/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6404/  2612 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6076/  2620 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  4272/  4500 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16667, got signal=6
Threads: 2: [mm_] [52.3% done] [  5872/  1356 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16666, got signal=6
Threads: 1: [m__] [57.1% done] [  5336/  3248 kb/s] [eta 00m:18s]
Threads: 1: [m__] [62.5% done] [  8372/     0 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] [  6624/     0 kb/s] [eta 00m:13s]
fio: pid=16665, got signal=6

fio: (groupid=0): err= 0: pid=16665
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=34.9%, 8=63.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.2%, 10=0.5%, 20=3.7%, 50=39.1%, 100=7.5%
     lat (msec): 250=32.9%, 500=15.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16666
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=33.5%, 8=63.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.6%, 20=2.6%, 50=16.1%, 100=24.4%
     lat (msec): 250=50.6%, 500=4.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16667
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.7%, 4=32.1%, 8=64.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.9%, 20=2.2%, 50=14.5%, 100=25.4%
     lat (msec): 250=53.0%, 500=3.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3455/2225, merge=362/491, ticks=53676/46348, in_queue=100020, util=98.52%
0.23user 0.46system 0:27.12elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2488minor)pagefaults 0swaps