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] [ 12600/  8431 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 14716/  5470 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  7875/ 10065 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  9603/  9318 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 12832/  5339 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14321/  4246 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 15408/  2279 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 10274/  5153 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  9768/  6729 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  9558/  5698 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  8126/  5580 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7025/  4498 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5047/  5352 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9648/  1688 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7899/  1897 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5416/  3665 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2639/  5568 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29579, got signal=6
Threads: 2: [mm_] [64.5% done] [  5778/  1901 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mV_] [65.6% done] [  1435/  4055 kb/s] [eta 00m:11s]
fio: pid=29578, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29577, got signal=6

fio: (groupid=0): err= 0: pid=29577
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=8.7%, 100=41.9%
     lat (msec): 250=46.9%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29578
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=4.3%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=0.3%, 50=9.3%, 100=46.3%
     lat (msec): 250=43.4%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29579
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=8.4%, 100=44.9%
     lat (msec): 250=45.6%, 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=3542/2596, merge=432/169, ticks=44628/37320, in_queue=81940, util=99.01%
0.33user 0.41system 0:21.99elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
379000inputs+235176outputs (0major+2465minor)pagefaults 0swaps