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] [13.6% done] [ 17750/  4303 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 14891/  5983 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 16591/  2993 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10516/  8894 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 12568/  5615 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  8427/  9115 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 13007/  4437 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 16461/  1328 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  5619/  8777 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  6761/  6798 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7036/  5596 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8549/  3668 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6517/  4827 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5723/  5767 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5640/  3441 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  7630/  2757 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28423, got signal=6
Threads: 2: [mm_] [63.3% done] [  6914/  2456 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28422, got signal=6
Threads: 1: [m__] [64.5% done] [  4612/  2684 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28421, got signal=6

fio: (groupid=0): err= 0: pid=28421
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.6%, 8=91.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.0%, 20=2.6%, 50=11.4%, 100=45.6%
     lat (msec): 250=38.8%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28422
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.6%, 50=8.3%, 100=47.5%
     lat (msec): 250=40.3%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28423
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.2%, 50=8.1%, 100=49.4%
     lat (msec): 250=39.6%, 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=3664/2090, merge=697/156, ticks=43148/31776, in_queue=74916, util=99.24%
0.18user 0.34system 0:21.14elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
409952inputs+204360outputs (0major+2454minor)pagefaults 0swaps