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] [  8110/ 13028 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 16782/  4580 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [  8513/  8981 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 11084/  8436 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 13329/  4681 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 16619/  1265 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  9692/  6959 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  5755/  8659 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  3904/  9635 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 10730/  3900 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  7191/  5845 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 10640/  2851 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  9993/  2106 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  6158/  4051 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  9786/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19820, got signal=6
Threads: 2: [m_m] [58.1% done] [  7069/   345 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [59.4% done] [  8578/  1151 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19819, got signal=6
Threads: 1: [__m] [60.6% done] [  2997/  3717 kb/s] [eta 00m:13s]
Threads: 1: [__m] [65.6% done] [  3315/  4340 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19821, got signal=6

fio: (groupid=0): err= 0: pid=19819
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.4%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.2%, 20=0.7%, 50=13.9%, 100=37.1%
     lat (msec): 250=46.3%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19820
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.7%, 8=92.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.4%, 50=10.6%, 100=58.6%
     lat (msec): 250=28.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19821
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=18.5%, 100=23.0%
     lat (msec): 250=55.1%, 500=1.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3895/2232, merge=610/115, ticks=46168/31492, in_queue=77660, util=99.13%
0.16user 0.37system 0:21.86elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398928inputs+215360outputs (0major+2461minor)pagefaults 0swaps