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] [12.0% done] [ 15517/  3685 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 14891/  4482 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 13849/  3522 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 12674/  3384 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [29.2% done] [ 17274/  4787 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12938/  6569 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 11604/  4543 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11633/  4872 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10156/  2631 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  8358/  6412 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11783/  3762 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  9029/  4173 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  5938/  5348 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 10034/  1565 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8789/  2161 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  8204/  1012 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6668/  2466 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  2001/  5495 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11472, got signal=6
Threads: 2: [_mm] [65.6% done] [  2612/  3141 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11473, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11474, got signal=6

fio: (groupid=0): err= 0: pid=11472
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=7.8%, 100=54.4%
     lat (msec): 250=36.8%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11473
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=2.4%, 50=7.7%, 100=48.3%
     lat (msec): 250=39.5%, 500=0.8%, 750=0.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11474
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.3%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.5%, 10=0.3%, 20=1.2%, 50=6.9%, 100=45.5%
     lat (msec): 250=43.9%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3965/2054, merge=648/318, ticks=49920/34976, in_queue=84896, util=99.09%
0.44user 0.31system 0:22.25elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
440000inputs+174336outputs (0major+2458minor)pagefaults 0swaps