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] [ 16058/  4912 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 21215/  2153 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  9276/  9439 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12938/  6107 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 10815/  6894 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 13763/  4494 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 15729/  2446 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  6190/  6731 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10682/  4551 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  9776/  4388 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 11308/  3592 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 10735/  1584 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  6030/  5965 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  7484/  4636 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4701/  4189 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7781/  2182 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=729, got signal=6
Threads: 2: [m_m] [61.3% done] [  1503/  5534 kb/s] [eta 00m:12s]
Threads: 2: [m_m] [64.5% done] [  3925/  3453 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=728, got signal=6
Threads: 1: [__m] [67.7% done] [  4880/  2328 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=730, got signal=6

fio: (groupid=0): err= 0: pid=728
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.1%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=8.6%, 100=45.1%
     lat (msec): 250=44.3%, 500=0.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=729
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=11.2%, 100=48.2%
     lat (msec): 250=39.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=730
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=4.2%, 50=9.4%, 100=38.0%
     lat (msec): 250=46.6%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3741/2202, merge=649/134, ticks=45376/35156, in_queue=80528, util=97.88%
0.25user 0.54system 0:21.64elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
411656inputs+202200outputs (0major+2451minor)pagefaults 0swaps