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] [ 13569/  9741 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 11174/  9358 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  9090/  9875 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 12979/  5645 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [  9168/  9977 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 13230/  3588 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 11730/  6060 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9782/  5397 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 13958/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  6944/  6741 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  7419/  5422 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6259/  5804 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9290/  2403 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  5149/  4982 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25597, got signal=6
Threads: 2: [mm_] [56.7% done] [  7394/  1936 kb/s] [eta 00m:13s]
Threads: 2: [mm_] [60.0% done] [  6215/  2212 kb/s] [eta 00m:12s]
Threads: 2: [mm_] [63.3% done] [  6284/  2883 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25596, got signal=6
Threads: 1: [m__] [66.7% done] [  5861/  1980 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25595, got signal=6

fio: (groupid=0): err= 0: pid=25595
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.6%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.5%, 20=2.0%, 50=14.1%, 100=36.8%
     lat (msec): 250=45.2%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25596
  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=0.2%, 20=3.1%, 50=13.3%, 100=40.7%
     lat (msec): 250=41.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25597
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.3%, 8=91.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=2.7%, 50=11.4%, 100=59.4%
     lat (msec): 250=25.8%, 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=3687/2177, merge=451/164, ticks=40576/32004, in_queue=72572, util=98.23%
0.19user 0.56system 0:21.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
407336inputs+206952outputs (0major+2455minor)pagefaults 0swaps