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] [10.3% done] [ 16835/  4238 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [15.4% done] [ 18486/  1065 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [19.2% done] [  9278/  9017 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [22.2% done] [  5985/ 10833 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [25.0% done] [ 10359/  4396 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [28.6% done] [ 12743/  3123 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [32.1% done] [ 11348/  5645 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [35.7% done] [ 10510/  5047 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [39.3% done] [ 13706/  2190 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.9% done] [ 11055/  3640 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  3559/  8977 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  6398/  6361 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  3835/  8297 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  8972/  2538 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  7131/  3275 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  4405/  4791 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  8147/  2005 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [64.5% done] [  3384/  4262 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.6% done] [  4970/  2582 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [66.7% done] [  5489/   581 kb/s] [eta 00m:11s]
fio: pid=26556, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26557, got signal=6
fio: pid=26558, got signal=6

fio: (groupid=0): err= 0: pid=26556
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.3%, 8=96.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=5.1%, 100=44.7%
     lat (msec): 250=47.5%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26557
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=3.9%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=1.2%, 50=8.4%, 100=43.2%
     lat (msec): 250=43.0%, 500=3.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26558
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.2%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=0.7%, 50=4.8%, 100=43.7%
     lat (msec): 250=48.5%, 500=1.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3857/1914, merge=709/294, ticks=44232/37260, in_queue=81488, util=97.58%
0.23user 0.35system 0:23.14elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
418544inputs+195656outputs (0major+2461minor)pagefaults 0swaps