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] [14.3% done] [ 17765/  4315 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 17518/  2688 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 14545/  5129 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 11210/  8187 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  7623/  8078 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 12409/  5847 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 18202/  1175 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10864/  5385 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 15318/  1582 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10852/  4490 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  9721/  3042 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  4466/  6760 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  8122/  3197 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5766/  4648 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5625/  2883 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [ 10624/     0 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  3616/  2883 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23834, got signal=6
Threads: 2: [m_m] [66.7% done] [  2546/  3961 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23833, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23835, got signal=6

fio: (groupid=0): err= 0: pid=23833
  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=1.1%, 50=8.7%, 100=52.1%
     lat (msec): 250=36.6%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23834
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=9.2%, 100=56.4%
     lat (msec): 250=33.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23835
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=7.9%, 100=51.0%
     lat (msec): 250=38.0%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3961/1743, merge=673/89, ticks=46392/30836, in_queue=77216, util=98.84%
0.20user 0.36system 0:21.19elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
446112inputs+167936outputs (0major+2452minor)pagefaults 0swaps