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] [  9894/ 11174 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  9713/  9892 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 15175/  3636 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 13443/  5426 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 12271/  6626 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 13742/  3031 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 12991/  3408 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  9606/  7541 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 13801/  2192 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  6060/  8322 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  6646/  4746 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 10425/  3396 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7545/  4775 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 11995/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7809/  1700 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4356/  4116 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7948, got signal=6
Threads: 2: [m_m] [63.3% done] [  6560/   996 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  3998/  3245 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_V] [67.7% done] [  2425/  3754 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7947, got signal=6
fio: pid=7949, got signal=6

fio: (groupid=0): err= 0: pid=7947
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.2%, 50=11.1%, 100=36.1%
     lat (msec): 250=50.6%, 500=1.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7948
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=0.4%, 50=11.1%, 100=47.9%
     lat (msec): 250=39.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7949
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=6.2%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.1%, 10=0.2%, 20=1.2%, 50=7.7%, 100=45.3%
     lat (msec): 250=43.8%, 500=0.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3780/2198, merge=662/106, ticks=48312/33860, in_queue=82160, util=98.20%
0.18user 0.65system 0:21.82elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
399936inputs+214328outputs (0major+2459minor)pagefaults 0swaps