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] [ 12641/  9817 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [  9318/ 10026 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14537/  5312 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [   231/ 18293 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  7040/ 12145 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 10286/  7187 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.5% done] [ 18381/  1020 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  8183/  7513 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10372/  4474 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 10613/  5416 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8362/  3725 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  5340/  6988 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7374/  3721 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6704/  3429 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4230/  4628 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6613/  1753 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11516, got signal=6
Threads: 2: [mm_] [63.3% done] [  2359/  4929 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11515, got signal=6
Threads: 1: [m__] [64.5% done] [  4852/  2273 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11514, got signal=6

fio: (groupid=0): err= 0: pid=11514
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.8%, 50=13.2%, 100=33.8%
     lat (msec): 250=48.3%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11515
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.3%, 50=8.7%, 100=42.3%
     lat (msec): 250=46.7%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11516
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=5.3%, 100=61.8%
     lat (msec): 250=31.7%, 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=3328/2438, merge=564/78, ticks=38672/35216, in_queue=73888, util=99.12%
0.19user 0.22system 0:21.09elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
367760inputs+246432outputs (0major+2458minor)pagefaults 0swaps