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] [ 15221/  5327 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [  8619/ 10783 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [ 15855/  4620 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [  6241/  9902 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 11223/  6676 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 13116/  4782 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 11437/  4506 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 12377/  4136 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  5250/  9760 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 13044/  2306 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8720/  4148 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 12271/  2009 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11674/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5495/  5796 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5312/  4665 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6737/  2734 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7280/  1326 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25155, got signal=6
Threads: 2: [m_m] [64.5% done] [  5050/  1564 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [67.7% done] [  4559/  2530 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25156, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25154, got signal=6

fio: (groupid=0): err= 0: pid=25154
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.7%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=0.9%, 50=8.6%, 100=44.5%
     lat (msec): 250=44.5%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25155
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.1%, 8=92.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=9.7%, 100=45.2%
     lat (msec): 250=44.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25156
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.1%, 50=4.6%, 100=50.0%
     lat (msec): 250=42.8%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3897/2252, merge=583/172, ticks=46992/33952, in_queue=80940, util=99.17%
0.35user 0.40system 0:21.85elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
394496inputs+219504outputs (0major+2458minor)pagefaults 0swaps