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] [ 11262/  9810 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  8732/ 12702 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 12475/  7651 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 12438/  7166 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  9135/  7626 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  7923/  9131 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11629/  5100 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 13085/  2879 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  6845/  7577 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6235/  8196 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9709/  3563 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 10787/  1895 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11897/   992 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5023/  5243 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  4754/  5649 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6353/  3188 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5014, got signal=6
Threads: 2: [m_m] [63.3% done] [  6007/  1553 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  2127/  5133 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5015, got signal=6
Threads: 1: [m__] [67.7% done] [  2867/  2460 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5013, got signal=6

fio: (groupid=0): err= 0: pid=5013
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.4%, 50=9.9%, 100=37.8%
     lat (msec): 250=49.2%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5014
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=8.3%, 100=51.2%
     lat (msec): 250=39.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5015
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.5%, 100=42.5%
     lat (msec): 250=46.8%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3451/2604, merge=630/191, ticks=42408/36560, in_queue=78960, util=99.18%
0.51user 0.30system 0:21.72elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
357248inputs+256904outputs (0major+2462minor)pagefaults 0swaps