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] [13.0% done] [ 14957/  6574 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 13202/  9276 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 12068/  6209 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  9914/  9459 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 17034/  1808 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 18984/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13698/  3994 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10256/  4522 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 16806/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 12783/   686 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  7013/  7310 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  1836/  9691 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  3730/  5920 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9703/  1844 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7391/  2925 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4859/  4510 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2954/  4717 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2391, got signal=6
Threads: 2: [mm_] [64.5% done] [  3815/  2950 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2389, got signal=6
Threads: 1: [_m_] [67.7% done] [  5623/  1292 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2390, got signal=6

fio: (groupid=0): err= 0: pid=2389
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=3.7%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=0.4%, 50=9.6%, 100=44.3%
     lat (msec): 250=44.8%, 500=0.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2390
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.1%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.6%, 20=3.5%, 50=7.8%, 100=46.6%
     lat (msec): 250=39.7%, 500=1.0%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2391
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.3%, 50=10.8%, 100=41.8%
     lat (msec): 250=46.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3933/1957, merge=634/113, ticks=49204/26264, in_queue=75464, util=98.87%
0.31user 0.54system 0:21.57elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
431696inputs+182456outputs (0major+2455minor)pagefaults 0swaps