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] [  9187/ 11133 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 15859/  4108 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 14362/  4864 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 10877/  7249 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 13597/  5816 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12414/  4954 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13064/  3262 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9981/  6658 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5656/ 10256 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10754/  2660 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 12597/  2973 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 12365/   650 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8269/  3087 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8061/  3023 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8541/  1777 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13713, got signal=6
Threads: 2: [mm_] [62.1% done] [  7988/   902 kb/s] [eta 00m:11s]
Threads: 2: [mm_] [63.3% done] [  6377/  2111 kb/s] [eta 00m:11s]
Threads: 2: [mm_] [66.7% done] [  5840/  1647 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13711, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13712, got signal=6

fio: (groupid=0): err= 0: pid=13711
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=12.3%, 100=42.7%
     lat (msec): 250=42.6%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13712
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=10.8%, 100=39.5%
     lat (msec): 250=46.4%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13713
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=8.6%, 8=91.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.7%, 20=1.7%, 50=12.3%, 100=47.9%
     lat (msec): 250=37.1%, 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=4019/1577, merge=620/57, ticks=45088/25592, in_queue=70656, util=99.11%
0.20user 0.40system 0:21.00elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
433312inputs+180880outputs (0major+2450minor)pagefaults 0swaps