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] [5.0% done] [   296/   244 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [ 13228/  1525 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [8.3% done] [ 10320/  5352 kb/s] [eta 00m:55s]
Threads: 3: [mmm] [10.0% done] [  9684/  6700 kb/s] [eta 00m:54s]
Threads: 3: [mmm] [11.7% done] [ 14392/  1540 kb/s] [eta 00m:53s]
Threads: 3: [mmm] [13.3% done] [ 10322/  5737 kb/s] [eta 00m:52s]
Threads: 3: [mmm] [16.1% done] [  6636/  7320 kb/s] [eta 00m:47s]
Threads: 3: [mmm] [18.5% done] [  6116/  7700 kb/s] [eta 00m:44s]
Threads: 3: [mmm] [21.2% done] [ 11584/  2488 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [23.1% done] [  5152/  8652 kb/s] [eta 00m:40s]
Threads: 3: [mmm] [24.5% done] [  1800/ 10108 kb/s] [eta 00m:40s]
Threads: 3: [mmm] [25.9% done] [ 10664/  1576 kb/s] [eta 00m:40s]
Threads: 3: [mmm] [28.3% done] [  6912/  5004 kb/s] [eta 00m:38s]
Threads: 3: [mmm] [30.2% done] [  8928/  2800 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [32.7% done] [ 10628/     0 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [36.0% done] [  6256/  5332 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [38.0% done] [  7458/  3321 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [40.0% done] [  7005/  2933 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [41.2% done] [  5331/  4538 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [44.9% done] [  6562/  3689 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [45.1% done] [  4640/  3372 kb/s] [eta 00m:28s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [46.2% done] [  2958/  6135 kb/s] [eta 00m:28s]
fio: pid=5084, got signal=6
Threads: 2: [m_m] [48.1% done] [  6083/  1141 kb/s] [eta 00m:27s]
Threads: 2: [m_m] [51.0% done] [  6202/  1866 kb/s] [eta 00m:25s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [51.9% done] [  6838/     0 kb/s] [eta 00m:25s]
fio: pid=5085, got signal=6
Threads: 1: [m__] [58.3% done] [  2524/  7580 kb/s] [eta 00m:20s]
Threads: 1: [m__] [64.4% done] [  3555/  4648 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5083, got signal=6

fio: (groupid=0): err= 0: pid=5083
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.5%, 4=31.6%, 8=64.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.3%, 4=0.9%, 10=2.7%, 20=7.2%, 50=31.1%, 100=12.9%
     lat (msec): 250=26.7%, 500=13.7%, 750=2.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5084
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.8%, 4=29.1%, 8=68.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.4%, 10=1.0%, 20=4.7%, 50=20.4%, 100=22.2%
     lat (msec): 250=46.4%, 500=3.3%, 750=0.0%, 1000=0.1%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=5085
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.1%, 4=21.0%, 8=77.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=0.2%, 20=2.5%, 50=17.0%, 100=27.4%
     lat (msec): 250=46.9%, 500=3.7%, 750=0.7%, 1000=0.1%, >=2000=0.1%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3264/3412, merge=568/10658, ticks=57740/506824, in_queue=543208, util=99.31%
0.18user 0.33system 0:30.68elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2503minor)pagefaults 0swaps