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] [ 17413/  4002 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 17807/  5442 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 10742/  9745 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 17546/  3466 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 16684/  3526 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 13170/  4697 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 16388/  1232 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9920/  5930 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  6757/  7444 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 12410/  3176 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11136/  2733 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9302/  3249 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  6357/  5503 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  9672/  1773 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.0% done] [  7980/  1565 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [62.1% done] [  4360/  3583 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20547, got signal=6
Threads: 2: [m_m] [65.5% done] [  7642/   780 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20548, got signal=6
Threads: 1: [m__] [66.7% done] [  4002/  3335 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20546, got signal=6

fio: (groupid=0): err= 0: pid=20546
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=6.3%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=2.0%, 50=8.6%, 100=49.0%
     lat (msec): 250=38.6%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20547
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.3%, 8=91.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=9.5%, 100=54.1%
     lat (msec): 250=33.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20548
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.2%, 50=8.4%, 100=53.0%
     lat (msec): 250=37.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3941/1689, merge=689/201, ticks=45724/23132, in_queue=68848, util=97.81%
0.24user 0.71system 0:20.88elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
438520inputs+175776outputs (0major+2448minor)pagefaults 0swaps