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] [7.1% done] [ 16835/  3535 kb/s] [eta 00m:39s]
Threads: 3: [mmm] [11.4% done] [  8021/ 12674 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.7% done] [ 14740/  7512 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [21.4% done] [ 14734/  6322 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [25.9% done] [  8924/  8655 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [29.6% done] [ 15022/  3157 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [33.3% done] [  9000/  7895 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [37.0% done] [  8541/  7606 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [39.3% done] [ 10556/  6030 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.9% done] [ 11759/  2799 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [ 13230/  2279 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 10638/  3072 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  7936/  3941 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  4750/  6708 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  9614/  1097 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.0% done] [  7931/  1158 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  4230/  3555 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  2748/  5135 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12894, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12895, got signal=6
Threads: 1: [m__] [63.6% done] [  5089/  2027 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12893, got signal=6

fio: (groupid=0): err= 0: pid=12893
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.5%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=2.9%, 50=14.9%, 100=34.7%
     lat (msec): 250=44.9%, 500=1.3%, 750=0.1%, 1000=0.0%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=12894
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.2%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.4%, 20=2.6%, 50=8.3%, 100=46.5%
     lat (msec): 250=41.0%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12895
  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=0.4%, 50=8.0%, 100=45.7%
     lat (msec): 250=43.7%, 500=1.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3973/2523, merge=667/2806, ticks=48420/231932, in_queue=271564, util=99.77%
0.23user 0.44system 0:22.38elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
413624inputs+200584outputs (0major+2456minor)pagefaults 0swaps