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] [7.7% done] [ 10562/  6301 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.1% done] [ 11847/  5442 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [  7980/  8656 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  8650/  6598 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.4% done] [ 11068/  2260 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [20.5% done] [ 10780/  1072 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [ 10816/  2784 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.3% done] [ 12824/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.6% done] [  5372/  7392 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  7752/  3708 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.1% done] [  4868/  7144 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.8% done] [  5108/  6348 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [39.5% done] [  8624/  2444 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.2% done] [  5992/  4552 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  6364/  4292 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [46.2% done] [  5576/  4612 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  4988/  2692 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  7416/  1128 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  5964/  1252 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  3304/  5308 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12320, got signal=6
Threads: 2: [m_m] [54.8% done] [  2980/  4244 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [58.5% done] [   960/  9072 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12321, got signal=6
Threads: 1: [m__] [62.5% done] [  3035/  5351 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  2868/  4258 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12319, got signal=6

fio: (groupid=0): err= 0: pid=12319
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=4.5%, 4=39.7%, 8=55.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.7%, 10=2.1%, 20=11.9%, 50=25.0%, 100=12.2%
     lat (msec): 250=30.8%, 500=14.4%, 750=0.8%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12320
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=27.1%, 8=70.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.7%, 20=2.4%, 50=11.4%, 100=26.7%
     lat (msec): 250=55.5%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12321
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.6%, 4=32.6%, 8=64.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.7%, 20=4.2%, 50=13.7%, 100=28.1%
     lat (msec): 250=47.2%, 500=4.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3235/2522, merge=512/212, ticks=58288/44720, in_queue=103004, util=98.94%
0.23user 0.44system 0:27.17elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps