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] [9.4% done] [ 15568/  1205 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.5% done] [ 15265/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [15.2% done] [  9389/  6852 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [18.8% done] [  6167/  9365 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [20.0% done] [  9338/  4526 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [  5648/  7756 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [26.5% done] [  9428/  3728 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.6% done] [  9880/  3632 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  5736/  7156 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.3% done] [  9908/  3896 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.1% done] [  2148/  9424 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [38.9% done] [  5889/  5297 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  4364/  5932 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [42.1% done] [  9140/  1255 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.6% done] [  5204/  3632 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.4% done] [  3312/  6652 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.7% done] [  4848/  3916 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  4464/  3176 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [51.2% done] [  1064/  7680 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  3756/  3524 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32586, got signal=6
Threads: 2: [mm_] [53.5% done] [  6996/     0 kb/s] [eta 00m:20s]
Threads: 2: [mm_] [55.8% done] [  5432/  1320 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32585, got signal=6
Threads: 1: [m__] [61.0% done] [  1412/  8980 kb/s] [eta 00m:16s]
Threads: 1: [m__] [66.7% done] [  1808/  6704 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32584, got signal=6

fio: (groupid=0): err= 0: pid=32584
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.3%, 2=5.5%, 4=39.0%, 8=54.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.9%, 4=0.0%, 10=1.7%, 20=10.1%, 50=25.0%, 100=11.0%
     lat (msec): 250=34.1%, 500=14.5%, 750=1.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32585
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.0%, 4=32.9%, 8=63.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.2%, 10=0.7%, 20=3.3%, 50=16.4%, 100=25.4%
     lat (msec): 250=48.3%, 500=4.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32586
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.7%, 4=38.4%, 8=56.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.1%, 10=1.4%, 20=3.0%, 50=14.6%, 100=28.2%
     lat (msec): 250=48.9%, 500=2.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=2932/2881, merge=411/202, ticks=50528/53240, in_queue=103768, util=98.68%
0.21user 0.46system 0:27.24elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2498minor)pagefaults 0swaps