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] [8.6% done] [ 10992/  1437 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.8% done] [  5197/  9132 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.7% done] [  9612/  2971 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  9140/  4115 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  8783/  2929 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  5523/  6410 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  8766/  2317 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  5566/  5802 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.9% done] [  6770/  1748 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  7380/  1705 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [34.2% done] [  4828/  4903 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.9% done] [  5998/  3828 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  5801/  4119 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  2668/  6473 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  5163/  2989 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  6762/  1260 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3867/  5572 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5458/  2776 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  5499/  3319 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5255/  1584 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  3422/  3162 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  4557/  2377 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  2457/  3847 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.2% done] [  4616/  2290 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  3981/  1906 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.9% done] [  4855/   810 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32697, got signal=6
Threads: 2: [_mm] [58.8% done] [  3232/  4427 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [62.0% done] [  2838/  4060 kb/s] [eta 00m:19s]
Threads: 2: [_mm] [62.7% done] [  4064/  3816 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32698, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [67.3% done] [  3422/  4529 kb/s] [eta 00m:16s]
fio: pid=32699, got signal=6

fio: (groupid=0): err= 0: pid=32697
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=20.8%, 8=77.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.0%, 20=2.1%, 50=19.9%, 100=8.7%
     lat (msec): 250=62.9%, 500=5.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32698
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=1.8%, 4=20.0%, 8=77.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.0%, 20=2.5%, 50=20.7%, 100=5.1%
     lat (msec): 250=60.5%, 500=9.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32699
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.9%, 4=17.3%, 8=80.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.2%, 20=2.6%, 50=13.8%, 100=8.1%
     lat (msec): 250=63.4%, 500=9.5%, 750=0.7%, 1000=0.7%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3353/2182, merge=384/361, ticks=77656/35052, in_queue=112708, util=98.98%
0.08user 0.28system 0:33.89elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2517minor)pagefaults 0swaps