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] [ 19374/  4063 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17485/  3328 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  7085/ 11275 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13874/  4641 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  6688/ 10999 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  7492/  7931 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 12747/  3746 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  6564/  8200 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 13142/  3567 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  6347/  6956 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  3754/  9282 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6630/  4966 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  8659/  2822 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  6247/  4913 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7463/  2607 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7432/  1385 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30010, got signal=6
Threads: 2: [mm_] [63.3% done] [  8017/   634 kb/s] [eta 00m:11s]
Threads: 2: [mm_] [64.5% done] [  4303/  2879 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30009, got signal=6
Threads: 1: [m__] [67.7% done] [     0/  5889 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30008, got signal=6

fio: (groupid=0): err= 0: pid=30008
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=13.7%, 100=41.1%
     lat (msec): 250=43.1%, 500=1.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30009
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=11.8%, 100=46.1%
     lat (msec): 250=40.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30010
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.8%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.0%, 50=7.6%, 100=52.8%
     lat (msec): 250=36.9%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3415/2431, merge=616/210, ticks=41252/36148, in_queue=77400, util=98.99%
0.28user 0.31system 0:21.71elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
377416inputs+236552outputs (0major+2457minor)pagefaults 0swaps