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] [ 13849/  6430 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17998/  3912 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 10429/  8724 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 16347/  3868 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 17998/  1879 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [  6080/  9546 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  5401/ 10506 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 12092/  3925 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 13604/  1767 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 10730/  2843 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10811/  3469 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  9416/  3559 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5478/  5670 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8810/  2070 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5373/  4718 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5885/  3672 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3599/  4022 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15858, got signal=6
Threads: 2: [m_m] [66.7% done] [  6532/  1081 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15859, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15857, got signal=6

fio: (groupid=0): err= 0: pid=15857
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.1%, 50=9.4%, 100=44.2%
     lat (msec): 250=43.4%, 500=1.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15858
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=11.0%, 100=46.5%
     lat (msec): 250=41.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15859
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.5%, 50=8.5%, 100=42.2%
     lat (msec): 250=47.3%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3782/2285, merge=720/159, ticks=46744/32380, in_queue=79124, util=99.19%
0.16user 0.55system 0:21.58elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
404968inputs+209208outputs (0major+2457minor)pagefaults 0swaps