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] [ 11040/ 10179 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 21776/   633 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 13905/  6156 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 13593/  7313 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 17696/  2117 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 14283/  3267 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 16611/  2893 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10612/  3542 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11085/  5501 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 10792/  4226 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10418/  3726 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [  7610/  3965 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  9187/  1328 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  8293/  2015 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5725/  3994 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5437, got signal=6
Threads: 2: [mm_] [62.1% done] [  6855/  1613 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [63.3% done] [  7245/   735 kb/s] [eta 00m:11s]
fio: pid=5436, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5435, got signal=6

fio: (groupid=0): err= 0: pid=5435
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=12.8%, 100=42.4%
     lat (msec): 250=42.0%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5436
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=1.1%, 50=13.9%, 100=43.1%
     lat (msec): 250=40.7%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5437
  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=0.1%, 20=0.9%, 50=9.9%, 100=56.1%
     lat (msec): 250=32.4%, 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=4041/1456, merge=587/88, ticks=46584/19684, in_queue=66268, util=99.00%
0.23user 0.31system 0:20.25elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
464296inputs+149768outputs (0major+2444minor)pagefaults 0swaps