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] [  6960/  7096 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.8% done] [  9576/  3576 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.9% done] [  7940/  4424 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [  7720/  5364 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.4% done] [  3532/  4844 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  5532/  6316 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.1% done] [  5949/  3747 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [26.3% done] [  3464/  8492 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [28.2% done] [  8156/  2648 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.8% done] [  7736/  2268 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  7884/  1392 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  7896/  1560 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  7396/  1792 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  3175/  6706 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  7584/  2244 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  4924/  3364 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [44.2% done] [  6432/  1680 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [46.5% done] [  5816/  1664 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  7828/     0 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  4464/  2220 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [51.1% done] [  3228/  3676 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  4980/  1416 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  5708/   800 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [55.3% done] [  2708/  3788 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.4% done] [  5752/   940 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  6380/   556 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [59.2% done] [  1788/  6432 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12307, got signal=6
Threads: 2: [m_m] [60.0% done] [  6032/     0 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [62.0% done] [  4020/  2652 kb/s] [eta 00m:19s]
Threads: 2: [m_m] [61.5% done] [  2860/  3460 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12306, got signal=6
Threads: 1: [__m] [66.7% done] [  4940/  1636 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12308, got signal=6

fio: (groupid=0): err= 0: pid=12306
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=13.7%, 8=84.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.7%, 20=5.6%, 50=15.1%, 100=8.2%
     lat (msec): 250=63.7%, 500=5.1%, 750=0.2%, 1000=0.2%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=12307
  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=0.2%, 4=0.2%, 10=1.2%, 20=4.7%, 50=15.1%, 100=6.2%
     lat (msec): 250=66.3%, 500=5.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12308
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=12.8%, 8=86.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.8%, 20=3.5%, 50=16.8%, 100=3.1%
     lat (msec): 250=65.2%, 500=8.7%, 750=0.9%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3486/2155, merge=390/568, ticks=77948/44596, in_queue=122548, util=98.97%
0.14user 0.26system 0:34.59elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2517minor)pagefaults 0swaps