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] [14.3% done] [ 11073/ 10443 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 17303/  3412 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  9469/ 11559 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10900/  9469 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10065/  5924 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 12283/  5824 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  8745/  8322 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10089/  5770 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11543/  3432 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8326/  4433 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  8777/  3941 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8383/  4295 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9119/  2200 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  4815/  5080 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5731/  3652 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6469/  2494 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20590, got signal=6
Threads: 2: [m_m] [63.3% done] [  7768/   654 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [66.7% done] [  5157/  2302 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20589, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20591, got signal=6

fio: (groupid=0): err= 0: pid=20589
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.5%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=1.0%, 50=8.3%, 100=44.2%
     lat (msec): 250=45.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20590
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=6.9%, 100=57.6%
     lat (msec): 250=33.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20591
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.7%, 50=6.4%, 100=48.9%
     lat (msec): 250=42.0%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3775/1984, merge=360/129, ticks=45100/28800, in_queue=73896, util=99.21%
0.26user 0.39system 0:21.15elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
413768inputs+200584outputs (0major+2456minor)pagefaults 0swaps