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] [ 17050/  3884 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 10482/ 10888 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 12767/  6695 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 14972/  4396 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 14478/  4876 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 11441/  5767 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 13760/  3835 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  8895/  6861 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13292/  2786 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 12625/  3498 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9875/  3652 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8212/  4408 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  3034/  8187 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6182/  4604 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7081/  2326 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3046/  5226 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4148/  3473 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32579, got signal=6
Threads: 2: [m_m] [62.5% done] [   402/  5397 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32578, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32580, got signal=6

fio: (groupid=0): err= 0: pid=32578
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.4%, 8=96.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=9.1%, 100=49.0%
     lat (msec): 250=40.5%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32579
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=1.7%, 50=9.5%, 100=50.3%
     lat (msec): 250=37.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32580
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=4.6%, 50=9.6%, 100=40.2%
     lat (msec): 250=43.3%, 500=0.9%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3705/2255, merge=715/107, ticks=46524/30640, in_queue=77156, util=99.07%
0.18user 0.57system 0:21.48elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
402840inputs+211456outputs (0major+2461minor)pagefaults 0swaps