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] [8.8% done] [  6136/  7160 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [  9338/  3245 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.3% done] [  6652/  5376 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [ 10439/  2877 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [19.4% done] [  9823/  2139 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [  6029/  5478 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  5518/  5813 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  6228/  4650 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  5232/  5032 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  5064/  5112 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  7484/  2984 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  2754/  7838 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [39.5% done] [  4656/  6136 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  2708/  7669 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  3632/  5468 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  8292/  1300 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  6284/   648 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  2766/  5071 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  5673/  1749 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  6548/   284 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4139/  2653 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  3692/  3036 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  4540/  2568 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  1548/  6160 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  3508/  3472 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [58.3% done] [  4052/  3420 kb/s] [eta 00m:20s]
fio: pid=5185, got signal=6
Threads: 2: [_mm] [58.8% done] [  4516/  1856 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [63.3% done] [  2540/  6008 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [_mm] [64.0% done] [  6528/   344 kb/s] [eta 00m:18s]
fio: pid=5186, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5187, got signal=6

fio: (groupid=0): err= 0: pid=5185
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.8%, 4=19.0%, 8=77.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.9%, 20=4.9%, 50=18.5%, 100=7.9%
     lat (msec): 250=62.4%, 500=4.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5186
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.4%, 4=16.8%, 8=81.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.5%, 20=4.4%, 50=17.6%, 100=5.3%
     lat (msec): 250=61.2%, 500=8.5%, 750=1.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5187
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=1.5%, 4=13.9%, 8=84.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.1%, 10=0.8%, 20=3.4%, 50=12.6%, 100=7.4%
     lat (msec): 250=64.6%, 500=8.6%, 750=1.0%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3068/2403, merge=434/374, ticks=70472/39664, in_queue=110136, util=98.76%
0.10user 0.30system 0:33.17elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps