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] [7.7% done] [ 12312/  4212 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.4% done] [ 14280/  3180 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.2% done] [  8436/  8556 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [15.0% done] [  8564/  5548 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [17.9% done] [ 11516/  3020 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [19.5% done] [  4640/  6568 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [22.0% done] [  5756/  8328 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [24.4% done] [  5928/  7420 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.2% done] [ 10868/  3112 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [29.3% done] [  8828/  2116 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [ 12528/     0 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [34.1% done] [  7472/  3676 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [36.6% done] [  6292/  4284 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  6856/  3852 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  4408/  6016 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.9% done] [  5148/  3360 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  8584/   700 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  4628/  4560 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  4984/  3080 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  3164/  3996 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19667, got signal=6
Threads: 2: [m_m] [52.3% done] [  5960/  1052 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19668, got signal=6
Threads: 1: [m__] [55.8% done] [  3304/  4492 kb/s] [eta 00m:19s]
Threads: 1: [m__] [62.5% done] [  1700/  8556 kb/s] [eta 00m:15s]
Threads: 1: [m__] [66.7% done] [  5660/  1808 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19666, got signal=6

fio: (groupid=0): err= 0: pid=19666
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=3.7%, 4=36.2%, 8=59.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.1%, 10=3.1%, 20=4.9%, 50=31.6%, 100=11.8%
     lat (msec): 250=32.6%, 500=12.6%, 750=1.8%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19667
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.4%, 4=29.8%, 8=67.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=1.1%, 20=2.8%, 50=13.9%, 100=26.7%
     lat (msec): 250=51.9%, 500=3.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19668
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=26.9%, 8=71.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.8%, 20=3.0%, 50=6.9%, 100=29.2%
     lat (msec): 250=55.2%, 500=4.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3292/2419, merge=604/295, ticks=60980/45444, in_queue=106408, util=99.03%
0.25user 0.36system 0:27.04elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2488minor)pagefaults 0swaps