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] [ 17123/  4673 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 15128/  5965 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 13259/  6046 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 11555/  8708 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 11601/  6481 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 13939/  4096 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 13108/  4559 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 15749/   699 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  7107/  8212 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  6712/  6554 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11284/  3267 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5810/  5583 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  8996/  2543 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [ 10788/   796 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7216/  2336 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  6534/  1901 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  7976/   979 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17569, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17568, got signal=6
Threads: 1: [m__] [66.7% done] [  6058/   857 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17567, got signal=6

fio: (groupid=0): err= 0: pid=17567
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.5%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.4%, 20=2.7%, 50=7.2%, 100=43.2%
     lat (msec): 250=45.0%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17568
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=8.7%, 100=48.4%
     lat (msec): 250=40.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17569
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.8%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=2.8%, 50=9.0%, 100=48.9%
     lat (msec): 250=38.5%, 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=4299/1659, merge=675/175, ticks=50416/25256, in_queue=75664, util=98.96%
0.53user 0.30system 0:20.88elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
445968inputs+168352outputs (0major+2445minor)pagefaults 0swaps