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] [ 17400/  3945 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 13925/  6875 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 10884/  9367 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  8090/ 10864 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 17424/  2308 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.8% done] [ 12824/  3831 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 11556/  4039 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12617/  3945 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 13288/  2460 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12897/  1881 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11210/  2790 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 10636/  1488 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9033/  1923 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9910/  1804 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7585/  2277 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5816/  2721 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5458/  2355 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=416, got signal=6
Threads: 2: [mm_] [64.5% done] [  3860/  2578 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=415, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=414, got signal=6

fio: (groupid=0): err= 0: pid=414
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=10.8%, 100=39.1%
     lat (msec): 250=47.3%, 500=0.4%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=415
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=7.7%, 8=91.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.0%, 50=8.8%, 100=49.1%
     lat (msec): 250=39.2%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=416
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.1%, 100=47.3%
     lat (msec): 250=44.0%, 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=4153/1936, merge=396/288, ticks=51344/30040, in_queue=81372, util=99.39%
0.49user 0.56system 0:21.67elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
435256inputs+178880outputs (0major+2453minor)pagefaults 0swaps