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] [8.3% done] [  2152/ 12148 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.4% done] [  6420/  7448 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.9% done] [  6368/  6376 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.1% done] [  5540/  6800 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  6520/  4796 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  6132/  4996 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  5268/  6332 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [26.3% done] [  4008/  8136 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.9% done] [  5712/  5196 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  6864/  2820 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  4376/  3700 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6532/  2980 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  8304/  1164 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  5428/  4976 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  4932/  3736 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5400/  4044 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  3644/  5364 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  3380/  3860 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4696/  4308 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4456/  2080 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  6260/  1224 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  3480/  3680 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  1820/  5528 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  2760/  3108 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  3832/  3968 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.1% done] [  5469/  1669 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5162, got signal=6
Threads: 2: [_mm] [59.2% done] [  3432/  2184 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [61.2% done] [  2984/  4848 kb/s] [eta 00m:19s]
Threads: 2: [_mm] [62.0% done] [  4036/  2700 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5163, got signal=6
Threads: 1: [__m] [65.3% done] [  3820/  3148 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5164, got signal=6

fio: (groupid=0): err= 0: pid=5162
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.7%, 4=18.2%, 8=79.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.2%, 20=3.4%, 50=19.7%, 100=8.8%
     lat (msec): 250=61.0%, 500=5.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5163
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.0%, 4=14.9%, 8=83.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.8%, 20=4.1%, 50=17.9%, 100=7.0%
     lat (msec): 250=60.3%, 500=8.0%, 750=0.9%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5164
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=14.2%, 8=85.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=2.8%, 50=16.9%, 100=9.7%
     lat (msec): 250=59.6%, 500=8.3%, 750=1.3%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3021/2610, merge=352/510, ticks=67852/46800, in_queue=114652, util=98.92%
0.19user 0.30system 0:33.80elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2524minor)pagefaults 0swaps