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] [13.0% done] [ 13101/  7976 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 16087/  3107 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 16001/  4649 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  7984/ 10209 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11563/  6089 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 10880/  6540 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 10248/  5997 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12666/  4600 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  7203/  7232 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10132/  4956 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9656/  4335 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  7207/  5576 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6282/  4660 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8818/  3184 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8342/  1749 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6589/  2599 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  9233/   520 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10980, got signal=6
Threads: 2: [mm_] [64.5% done] [  4380/  2330 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10978, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10979, got signal=6

fio: (groupid=0): err= 0: pid=10978
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.0%, 50=7.9%, 100=45.2%
     lat (msec): 250=43.5%, 500=0.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10979
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.0%, 50=8.3%, 100=45.4%
     lat (msec): 250=41.6%, 500=0.5%, 750=0.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10980
  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=0.1%, 20=0.9%, 50=10.4%, 100=48.6%
     lat (msec): 250=39.5%, 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=4065/1968, merge=666/62, ticks=49364/27996, in_queue=77360, util=99.10%
0.21user 0.39system 0:21.33elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
419248inputs+194856outputs (0major+2454minor)pagefaults 0swaps