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] [14.3% done] [ 15774/  5250 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 13145/  7919 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [  5526/ 12999 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  5111/ 14449 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11138/  6477 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14331/  4051 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  9943/  7720 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  7789/  9224 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8964/  7147 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8638/  4864 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6018/  7249 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 12336/   662 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8431/  3409 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8317/  3352 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4128/  4750 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4729/  3957 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2775/  4291 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4863, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4864, got signal=6
Threads: 1: [m__] [64.5% done] [  5185/  2324 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4862, got signal=6

fio: (groupid=0): err= 0: pid=4862
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=14.3%, 100=43.4%
     lat (msec): 250=40.1%, 500=0.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4863
  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=0.1%, 50=9.7%, 100=55.7%
     lat (msec): 250=34.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4864
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.8%, 50=9.7%, 100=43.2%
     lat (msec): 250=44.1%, 500=0.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3133/2499, merge=527/126, ticks=37052/35800, in_queue=72852, util=99.00%
0.32user 0.58system 0:21.30elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
375016inputs+239144outputs (0major+2454minor)pagefaults 0swaps