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] [12.0% done] [  9285/  9265 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 10944/  7692 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 11268/  8056 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 11403/  6582 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 15265/  2899 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 10649/  4116 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 13799/  3051 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 12636/  2682 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 14757/   991 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 10711/  3153 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  6713/  5791 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 10031/  3575 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  4460/  6803 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  4202/  5709 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  5373/  4681 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  6905/  3051 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [59.4% done] [  6205/  2224 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [62.5% done] [  5758/  2101 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.6% done] [  4853/  2891 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31045, got signal=6
Threads: 2: [_mm] [64.7% done] [  6373/  1441 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31047, got signal=6
Threads: 1: [_m_] [67.6% done] [   573/  5607 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31046, got signal=6

fio: (groupid=0): err= 0: pid=31045
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.7%, 8=99.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=2.9%, 100=39.7%
     lat (msec): 250=56.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31046
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=1.0%, 8=98.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=8.9%, 100=33.6%
     lat (msec): 250=55.1%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31047
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=0.8%, 8=98.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=7.4%, 100=32.2%
     lat (msec): 250=59.7%, 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=3935/2252, merge=578/184, ticks=54459/35721, in_queue=90175, util=99.15%
1.78user 0.39system 0:23.47elapsed 9%CPU (0avgtext+0avgdata 0maxresident)k
401816inputs+212240outputs (0major+2471minor)pagefaults 0swaps