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] [ 13681/  9171 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 19442/  3323 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 16599/  4832 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14120/  5725 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 10644/  8147 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9163/  8374 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 10660/  6451 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 10760/  7168 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 12885/  2473 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11832/  2721 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  5580/  6727 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8078/  4071 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11551/   252 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5735/  4665 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18216, got signal=6
Threads: 2: [m_m] [58.6% done] [  7134/  1639 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [62.1% done] [  3652/  3746 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [63.3% done] [  3371/  4482 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18217, got signal=6
Threads: 1: [m__] [66.7% done] [  5580/  1557 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18215, got signal=6

fio: (groupid=0): err= 0: pid=18215
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=0.6%, 50=13.2%, 100=41.4%
     lat (msec): 250=43.1%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18216
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=8.0%, 8=91.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.4%, 20=2.2%, 50=8.8%, 100=67.6%
     lat (msec): 250=20.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18217
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.0%, 50=10.3%, 100=45.7%
     lat (msec): 250=41.1%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3585/2105, merge=648/93, ticks=40184/27428, in_queue=67612, util=98.99%
0.23user 0.46system 0:20.97elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399752inputs+214520outputs (0major+2458minor)pagefaults 0swaps