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] [ 18606/  2954 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  8147/  9452 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 16253/  4864 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 13666/  5096 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12039/  5759 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  6654/ 10957 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10827/  6089 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  8501/  8659 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8834/  6394 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  6373/  6528 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8622/  5465 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  7651/  4567 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8947/  2946 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7394/  3542 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  3888/  5633 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4283/  3689 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4405/  4506 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  5710/  1476 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23591, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23590, got signal=6
Threads: 1: [__m] [65.6% done] [  4461/  2165 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23592, got signal=6

fio: (groupid=0): err= 0: pid=23590
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.8%, 50=7.5%, 100=45.1%
     lat (msec): 250=45.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23591
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.0%, 20=3.1%, 50=5.2%, 100=46.8%
     lat (msec): 250=43.7%, 500=0.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23592
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.0%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=10.5%, 100=43.2%
     lat (msec): 250=43.6%, 500=0.5%, 750=0.3%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3674/2449, merge=618/171, ticks=44800/33960, in_queue=78752, util=99.08%
0.14user 0.57system 0:22.12elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
387184inputs+227112outputs (0major+2461minor)pagefaults 0swaps