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] [ 17921/  4128 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 15066/  7244 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 18222/  3469 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 18375/  1280 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11922/  6920 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 11795/  5417 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 14260/  2338 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 15582/  1610 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  9786/  3961 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10077/  5071 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7366/  5637 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 10374/  1621 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 12084/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9664/  1313 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6154/  4071 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3961/  3241 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19924, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19925, got signal=6
Threads: 1: [m__] [63.3% done] [  7630/   577 kb/s] [eta 00m:11s]
Threads: 1: [m__] [66.7% done] [  2001/  4523 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19923, got signal=6

fio: (groupid=0): err= 0: pid=19923
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.8%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=16.8%, 100=41.7%
     lat (msec): 250=38.0%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19924
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=8.4%, 100=53.9%
     lat (msec): 250=37.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19925
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.3%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.6%, 50=9.2%, 100=44.9%
     lat (msec): 250=42.2%, 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=4098/1512, merge=866/72, ticks=47576/20464, in_queue=68032, util=98.82%
0.15user 0.34system 0:20.66elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
466752inputs+147520outputs (0major+2446minor)pagefaults 0swaps