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] [7.1% done] [  6136/  9917 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [11.8% done] [  7652/  9948 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [13.9% done] [  5888/  9763 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [17.6% done] [  9928/  5316 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  9271/  4533 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [ 10421/  2630 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  6203/  5836 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.8% done] [  8483/  4860 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [30.6% done] [  9192/   787 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [32.4% done] [  6096/  5442 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [36.1% done] [  9007/  3587 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [36.8% done] [  4588/  7128 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.5% done] [  1756/  8806 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.0% done] [  5566/  5538 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [42.5% done] [  5246/  4686 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.2% done] [  4911/  4812 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  5754/  1890 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  3257/  5186 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4541/  3780 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  5856/  1102 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [52.2% done] [  3682/  3221 kb/s] [eta 00m:22s]
fio: pid=14978, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14979, got signal=6
Threads: 1: [m__] [56.8% done] [  8704/     0 kb/s] [eta 00m:19s]
Threads: 1: [m__] [61.9% done] [  7581/     0 kb/s] [eta 00m:16s]
Threads: 1: [m__] [67.5% done] [  7550/     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=14977, got signal=6

fio: (groupid=0): err= 0: pid=14977
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.9%, 4=34.9%, 8=64.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=3.9%, 50=38.1%, 100=9.0%
     lat (msec): 250=33.2%, 500=13.8%, 750=1.0%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14978
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.5%, 4=36.5%, 8=59.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.0%, 10=0.6%, 20=4.8%, 50=13.6%, 100=26.1%
     lat (msec): 250=49.6%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14979
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.9%, 4=37.0%, 8=58.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.4%, 20=3.7%, 50=13.4%, 100=29.0%
     lat (msec): 250=47.1%, 500=4.7%, 750=0.6%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3459/2293, merge=584/243, ticks=57720/81228, in_queue=138948, util=98.99%
0.22user 0.35system 0:27.69elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2491minor)pagefaults 0swaps