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] [ 13089/  9819 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [  7138/ 13158 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 15379/  4022 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 14700/  3904 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 10595/  9009 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 12031/  5686 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10902/  5676 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11283/  5470 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  9794/  5141 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9054/  5934 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8305/  5169 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8513/  3697 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7195/  4213 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6865/  3738 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  9200/   772 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5918/  3127 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4238/  3115 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12767, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12768, got signal=6
Threads: 1: [m__] [64.5% done] [  5182/  1936 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12766, got signal=6

fio: (groupid=0): err= 0: pid=12766
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.1%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=12.7%, 100=37.8%
     lat (msec): 250=46.5%, 500=1.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12767
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=9.1%, 100=48.5%
     lat (msec): 250=40.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12768
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.0%, 50=8.9%, 100=44.1%
     lat (msec): 250=43.3%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3604/2156, merge=653/148, ticks=44508/29612, in_queue=74116, util=99.00%
0.18user 0.54system 0:21.51elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399824inputs+214304outputs (0major+2456minor)pagefaults 0swaps