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] [ 11172/  5212 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [11.8% done] [  7884/  9116 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [14.3% done] [ 12188/  3144 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.6% done] [  7216/  7652 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [19.4% done] [  9168/  2308 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [ 10224/  4332 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [23.1% done] [ 10996/  3716 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.0% done] [  6568/  6088 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.2% done] [ 10816/  2588 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  6700/  5788 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  6580/  4568 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  6544/  5324 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  7892/  2420 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  2848/  7224 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  7360/  2688 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  4872/  4144 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.2% done] [  5748/  1848 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [45.5% done] [  6924/  1464 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.7% done] [  4924/  3892 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [48.9% done] [  3632/  3908 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22606, got signal=6
Threads: 2: [m_m] [52.3% done] [  5608/  2536 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22607, got signal=6
Threads: 1: [m__] [55.8% done] [  1576/  7572 kb/s] [eta 00m:19s]
Threads: 1: [m__] [62.5% done] [  2180/  7524 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  7748/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22605, got signal=6

fio: (groupid=0): err= 0: pid=22605
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.4%, 4=28.7%, 8=68.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.7%, 20=4.6%, 50=30.8%, 100=12.2%
     lat (msec): 250=32.9%, 500=15.9%, 750=0.9%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22606
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=28.0%, 8=69.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.1%, 20=5.5%, 50=10.6%, 100=26.2%
     lat (msec): 250=53.7%, 500=1.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22607
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.8%, 4=25.6%, 8=72.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.7%, 20=2.4%, 50=12.6%, 100=28.9%
     lat (msec): 250=49.5%, 500=5.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3305/2365, merge=476/184, ticks=71692/40608, in_queue=112300, util=98.33%
0.27user 0.48system 0:27.20elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps