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] [12.5% done] [ 12637/  8013 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 15358/  6361 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12926/  6007 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 11353/  7842 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [ 17058/  2312 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 11604/  6621 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 13573/  2525 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11999/  5401 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10811/  3803 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9788/  5087 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  4820/  8631 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  6902/  4807 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11218/  1561 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8875/  1561 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7053/  2782 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7496/  1720 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  5454/  3485 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.5% done] [  4649/  2188 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5733, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5734, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5732, got signal=6

fio: (groupid=0): err= 0: pid=5732
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=7.9%, 100=41.2%
     lat (msec): 250=47.6%, 500=0.4%, 750=0.3%, 1000=0.3%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5733
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=9.4%, 100=48.2%
     lat (msec): 250=41.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5734
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=1.2%, 50=7.9%, 100=42.9%
     lat (msec): 250=46.9%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4242/1806, merge=713/103, ticks=52048/29668, in_queue=81716, util=97.63%
0.22user 0.69system 0:21.66elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
440920inputs+173264outputs (0major+2455minor)pagefaults 0swaps