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] [15.0% done] [ 11723/ 12247 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 13280/  9042 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [  7911/ 13372 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [  6890/ 12698 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [  6357/ 12833 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 12324/  5015 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 10674/  5855 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 12324/  3945 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8338/  6674 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  7107/  6330 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7834/  5259 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 12715/   646 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8427/  3031 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  5442/  4746 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  3457/  5535 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5129/  2778 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6154, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6155, got signal=6
Threads: 1: [m__] [63.3% done] [  4555/  3104 kb/s] [eta 00m:11s]
Threads: 1: [m__] [66.7% done] [  7411/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6153, got signal=6

fio: (groupid=0): err= 0: pid=6153
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=7.8%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=3.1%, 50=15.8%, 100=37.0%
     lat (msec): 250=42.0%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6154
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.8%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=0.8%, 50=10.4%, 100=53.0%
     lat (msec): 250=35.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6155
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 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=0.8%, 50=9.9%, 100=44.6%
     lat (msec): 250=43.0%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3344/2432, merge=436/181, ticks=37404/34708, in_queue=72112, util=98.95%
0.32user 0.23system 0:20.64elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
347408inputs+266920outputs (0major+2459minor)pagefaults 0swaps