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] [  7280/  6540 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [11.1% done] [  5960/  7528 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [  3148/ 11300 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  7480/  2828 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [  4744/  7904 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [  5988/  4936 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [  6532/  4468 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [ 10468/     0 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  4080/  7656 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [30.0% done] [ 10152/   652 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  3740/  5792 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [34.1% done] [  4720/  4892 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  8968/  1916 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4224/  4640 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.5% done] [  6928/  2268 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.9% done] [  3288/  6228 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  4688/  3468 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  4516/  3996 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  3520/  3652 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  6472/  1144 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  1376/  6720 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2336/  5088 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.6% done] [  4412/  2696 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  5204/  1664 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  4184/  3628 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9005, got signal=6
Threads: 2: [_mm] [58.3% done] [  2756/  4308 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.4% done] [  5008/   976 kb/s] [eta 00m:19s]
Threads: 2: [_mm] [60.0% done] [  3652/  3756 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9006, got signal=6
Threads: 1: [__m] [64.6% done] [  6428/  1168 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=9007, got signal=6

fio: (groupid=0): err= 0: pid=9005
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=18.8%, 8=79.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=1.2%, 20=3.5%, 50=15.7%, 100=8.6%
     lat (msec): 250=64.1%, 500=6.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9006
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.8%, 4=18.7%, 8=80.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.0%, 20=2.5%, 50=18.2%, 100=7.0%
     lat (msec): 250=62.8%, 500=7.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=9007
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.2%, 4=17.7%, 8=80.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=0.7%, 20=1.6%, 50=17.6%, 100=8.1%
     lat (msec): 250=58.7%, 500=10.7%, 750=1.2%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2998/2462, merge=595/372, ticks=67404/43720, in_queue=111124, util=98.98%
0.14user 0.28system 0:33.10elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2516minor)pagefaults 0swaps