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] [12.5% done] [ 21537/  1053 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 15379/  5767 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  9671/  9744 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  7858/ 10054 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 13332/  5546 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  6306/ 10365 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 11084/  5845 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 13313/  2936 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 13543/  2141 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  7406/  8041 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  4718/  8716 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 10022/  3327 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9814/  3123 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5717/  4144 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8309/  2452 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5983/  2822 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4844/  2757 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3701, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3700, got signal=6
Threads: 1: [__m] [64.5% done] [  4230/  2774 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3702, got signal=6

fio: (groupid=0): err= 0: pid=3700
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=7.8%, 100=56.1%
     lat (msec): 250=34.7%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3701
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=7.4%, 100=46.3%
     lat (msec): 250=44.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3702
  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=1.4%, 50=14.9%, 100=33.0%
     lat (msec): 250=49.2%, 500=0.7%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3671/2299, merge=503/157, ticks=45604/30908, in_queue=76512, util=99.01%
0.16user 0.45system 0:21.25elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398352inputs+215600outputs (0major+2455minor)pagefaults 0swaps