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] [ 20569/  2647 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 15440/  6886 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [  6967/ 13235 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 10514/  8122 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [ 11540/  6334 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 14016/  2273 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 12349/  4722 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  5969/  8460 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9461/  5816 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 10746/  2993 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11417/  1610 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8342/  4514 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7777/  3933 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 10660/   447 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7692/  2962 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6334/  1808 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  4851/  3584 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [64.5% done] [  7183/   329 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31985, got signal=6
fio: pid=31984, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31986, got signal=6

fio: (groupid=0): err= 0: pid=31984
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.9%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=1.6%, 50=6.7%, 100=45.1%
     lat (msec): 250=45.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31985
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=7.7%, 100=47.1%
     lat (msec): 250=43.6%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31986
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.7%, 50=7.0%, 100=46.4%
     lat (msec): 250=42.7%, 500=0.1%, 750=0.1%, 1000=0.4%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4120/1836, merge=617/177, ticks=49340/30000, in_queue=79336, util=98.99%
0.32user 0.36system 0:21.16elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
432584inputs+181544outputs (0major+2449minor)pagefaults 0swaps