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] [13.0% done] [ 13780/  7569 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 13217/  6498 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 15899/  4052 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  6524/ 12587 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  6600/ 12154 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 10854/  6108 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  7750/  9164 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  7565/  8164 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  4044/ 12197 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9645/  4099 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  5785/  7124 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5586/  6477 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  8002/  3678 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  8676/  2288 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5584/  3867 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7742/  1900 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15614, got signal=6
Threads: 2: [m_m] [63.3% done] [  8873/   248 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15615, got signal=6
Threads: 1: [m__] [66.7% done] [  3099/  2997 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15613, got signal=6

fio: (groupid=0): err= 0: pid=15613
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=19.2%, 8=80.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=15.5%, 100=36.7%
     lat (msec): 250=44.8%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15614
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=19.0%, 8=80.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.2%, 50=7.0%, 100=50.1%
     lat (msec): 250=40.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15615
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=16.7%, 8=82.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.7%, 50=9.4%, 100=42.0%
     lat (msec): 250=46.2%, 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=3243/2860, merge=436/179, ticks=37968/41492, in_queue=79460, util=98.87%
0.43user 0.32system 0:21.44elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
323984inputs+290352outputs (0major+2450minor)pagefaults 0swaps