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] [ 18722/  4291 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 20825/   496 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 18185/  2066 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10856/  6870 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10294/  8753 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  9794/  6926 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 15078/   935 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10351/  6780 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 12072/  2774 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9709/  3237 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9985/  3587 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 12353/   557 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4364/  6263 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7044/  3896 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8501/  1643 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  5279/  3896 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6093/  2294 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15901, got signal=6
Threads: 2: [mm_] [62.5% done] [  3258/  4006 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15899, got signal=6
Threads: 1: [_m_] [65.6% done] [  3864/  2578 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15900, got signal=6

fio: (groupid=0): err= 0: pid=15899
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=8.9%, 100=48.6%
     lat (msec): 250=41.2%, 500=0.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15900
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.9%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.7%, 50=12.3%, 100=37.9%
     lat (msec): 250=45.4%, 500=0.6%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15901
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=4.6%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=1.1%, 50=10.6%, 100=44.4%
     lat (msec): 250=43.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3937/2208, merge=560/160, ticks=47016/35152, in_queue=82168, util=98.97%
0.18user 0.64system 0:22.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
410664inputs+203744outputs (0major+2459minor)pagefaults 0swaps