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] [11.1% done] [  6861/ 15623 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [15.4% done] [  8208/ 14579 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [19.2% done] [ 15594/  5198 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [23.1% done] [ 13722/  5575 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [ 13040/  6540 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [ 11502/  6935 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [33.3% done] [ 11836/  4978 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [38.5% done] [  9936/  6418 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 10156/  4641 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 11536/  3043 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [ 13365/  2119 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  8399/  3774 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6005/  5892 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  4124/  5308 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6038/  2742 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  3721/  5129 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31846, got signal=6
Threads: 2: [mm_] [59.4% done] [  7927/  1269 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [60.6% done] [  2879/  3835 kb/s] [eta 00m:13s]
fio: pid=31845, got signal=6
Threads: 1: [m__] [65.6% done] [  3717/  3144 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31844, got signal=6

fio: (groupid=0): err= 0: pid=31844
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=21.2%, 100=29.9%
     lat (msec): 250=45.9%, 500=1.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31845
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.2%, 100=52.6%
     lat (msec): 250=36.6%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31846
  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=0.1%, 20=1.3%, 50=8.3%, 100=60.2%
     lat (msec): 250=29.1%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3284/2619, merge=577/149, ticks=37064/37396, in_queue=74448, util=98.97%
0.16user 0.34system 0:22.03elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
343408inputs+270480outputs (0major+2462minor)pagefaults 0swaps