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] [10.0% done] [  5687/ 11523 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [12.9% done] [  5088/ 13087 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [16.1% done] [  9483/  6498 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [19.4% done] [  7920/  8274 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [21.2% done] [  8806/  2847 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [23.5% done] [ 10086/  1224 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.0% done] [  6636/  6498 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  6959/  5805 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.6% done] [  9066/  3843 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [ 10232/  2063 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [35.1% done] [  6959/  5379 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [37.8% done] [  5419/  6447 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.5% done] [  7782/  3654 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  4450/  5135 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [44.7% done] [  5021/  4974 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  3572/  6340 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  4808/  4288 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.2% done] [  3107/  6057 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [53.7% done] [  3190/  5565 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [56.1% done] [  1543/  6978 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17632, got signal=6
Threads: 2: [m_m] [55.8% done] [  1658/  4974 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17633, got signal=6
Threads: 1: [m__] [58.1% done] [  2670/  4166 kb/s] [eta 00m:18s]
Threads: 1: [m__] [65.0% done] [     0/  9397 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17631, got signal=6

fio: (groupid=0): err= 0: pid=17631
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.9%, 4=41.6%, 8=52.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=3.4%, 4=0.2%, 10=1.1%, 20=9.2%, 50=24.6%, 100=12.5%
     lat (msec): 250=34.9%, 500=12.8%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17632
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.7%, 4=34.0%, 8=61.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.5%, 20=3.3%, 50=13.6%, 100=26.7%
     lat (msec): 250=50.2%, 500=4.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17633
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.3%, 4=38.5%, 8=56.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=0.7%, 20=5.3%, 50=15.3%, 100=22.3%
     lat (msec): 250=49.4%, 500=5.3%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2706/3031, merge=471/242, ticks=54860/101968, in_queue=156828, util=98.93%
0.30user 0.40system 0:26.97elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2499minor)pagefaults 0swaps