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] [7.9% done] [ 11220/  1604 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [11.1% done] [  6856/  5212 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.2% done] [ 10972/  1848 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [16.7% done] [  9533/  4124 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.0% done] [  5120/  7632 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [  5952/  6784 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [25.0% done] [  4948/  7524 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  7356/  3220 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  8368/  1852 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  7524/  1976 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  7712/  1804 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6720/  2392 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  5716/  4220 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.0% done] [  7736/  2408 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  5656/  3080 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  4864/  4528 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  5080/  3968 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3604/  2760 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4420/  4260 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  3368/  4016 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4784/  2280 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  5556/  1564 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  3956/  2556 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  4904/  3280 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  6640/   636 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.1% done] [  3016/  4032 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13122, got signal=6
Threads: 2: [_mm] [58.0% done] [  3316/  4648 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13123, got signal=6
Threads: 1: [__m] [60.0% done] [  6428/  1252 kb/s] [eta 00m:20s]
Threads: 1: [__m] [64.6% done] [  7580/     0 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13124, got signal=6

fio: (groupid=0): err= 0: pid=13122
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=18.4%, 8=79.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.6%, 20=3.2%, 50=18.8%, 100=8.6%
     lat (msec): 250=61.8%, 500=5.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13123
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.0%, 4=15.5%, 8=82.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.5%, 20=2.9%, 50=16.6%, 100=3.7%
     lat (msec): 250=63.5%, 500=9.8%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13124
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.0%, 4=15.9%, 8=82.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.4%, 20=2.8%, 50=23.8%, 100=2.9%
     lat (msec): 250=59.0%, 500=8.7%, 750=0.7%, 1000=0.8%, >=2000=0.3%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3476/1857, merge=610/432, ticks=80492/30680, in_queue=111172, util=99.00%
0.12user 0.30system 0:32.82elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2510minor)pagefaults 0swaps