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] [10.7% done] [  6778/ 11522 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [14.8% done] [  9015/ 10788 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [17.9% done] [  8003/  8990 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [21.4% done] [ 13533/  5660 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [25.0% done] [ 13172/  3956 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [27.6% done] [  8720/  6418 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [31.0% done] [  6807/  8683 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [34.5% done] [ 11599/  6225 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [37.9% done] [ 11579/  3575 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [41.4% done] [ 11321/  3629 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [43.3% done] [  8437/  4718 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [46.7% done] [  6873/  5148 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [48.4% done] [ 11210/  1241 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  5664/  3133 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.1% done] [  6135/  3751 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [56.2% done] [  1912/  6512 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [57.6% done] [  8056/  1622 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [60.6% done] [  6049/  2945 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8716, got signal=6
Threads: 2: [mm_] [60.0% done] [  4497/  2334 kb/s] [eta 00m:14s]
Threads: 2: [mm_] [62.9% done] [  4149/  2473 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8715, got signal=6
Threads: 1: [m__] [65.7% done] [  3563/  2764 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8714, got signal=6

fio: (groupid=0): err= 0: pid=8714
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=1.3%, 8=98.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=15.2%, 100=23.2%
     lat (msec): 250=58.7%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8715
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.9%, 8=98.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=7.2%, 100=36.3%
     lat (msec): 250=55.0%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8716
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=1.0%, 8=98.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=7.3%, 100=33.5%
     lat (msec): 250=57.9%, 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=3587/2580, merge=448/197, ticks=49046/44767, in_queue=93811, util=98.11%
1.81user 0.41system 0:23.93elapsed 9%CPU (0avgtext+0avgdata 0maxresident)k
370144inputs+244032outputs (0major+2474minor)pagefaults 0swaps