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] [  9662/  9476 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 11125/  9516 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [  8228/  9977 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 14394/  5633 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 11669/  7036 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  6668/  9845 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  5800/  9823 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  9354/  5835 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  8143/  7101 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 12881/  2676 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 13779/  1060 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6821/  6129 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10514/  1655 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9656/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4946/  4636 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  3982/  4893 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6146/  1952 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15710, got signal=6
Threads: 2: [m_m] [64.5% done] [  6162/  1675 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15711, got signal=6
Threads: 1: [m__] [65.6% done] [  2436/  4323 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15709, got signal=6

fio: (groupid=0): err= 0: pid=15709
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.0%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=9.4%, 100=45.6%
     lat (msec): 250=42.6%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15710
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.2%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.6%, 20=1.2%, 50=8.1%, 100=49.8%
     lat (msec): 250=40.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15711
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.0%, 50=10.1%, 100=40.6%
     lat (msec): 250=47.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3832/2339, merge=649/165, ticks=46136/36324, in_queue=82452, util=99.27%
0.17user 0.30system 0:21.97elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
389288inputs+224840outputs (0major+2463minor)pagefaults 0swaps