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
Threads: 3
Threads: 3
Threads: 3
Threads: 3
Threads: 3
Threads: 3: [mmm] [5.0% done] [     0/     0 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [5.0% done] [     0/     0 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [5.0% done] [     0/     0 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [5.0% done] [     0/     0 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [     0/     0 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [6.7% done] [     0/    54 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [8.3% done] [     0/   711 kb/s] [eta 00m:55s]
Threads: 3: [mmm] [10.0% done] [  3974/   361 kb/s] [eta 00m:54s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3706, got signal=6
Threads: 2: [_mm] [11.7% done] [ 11804/  2783 kb/s] [eta 00m:53s]
Threads: 2: [_mm] [13.3% done] [ 11767/  9086 kb/s] [eta 00m:52s]
Threads: 2: [_mm] [17.0% done] [ 20406/  1020 kb/s] [eta 00m:44s]
Threads: 2: [_mm] [23.3% done] [   846/ 18169 kb/s] [eta 00m:33s]
Threads: 2: [_mm] [28.2% done] [ 13382/  4039 kb/s] [eta 00m:28s]
Threads: 2: [_mm] [34.3% done] [  8562/  7736 kb/s] [eta 00m:23s]
Threads: 2: [_mm] [38.2% done] [ 10012/  4226 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [43.8% done] [  6072/  7870 kb/s] [eta 00m:18s]
Threads: 2: [_mm] [46.9% done] [ 10203/  3197 kb/s] [eta 00m:17s]
Threads: 2: [_mm] [51.6% done] [ 10648/  2314 kb/s] [eta 00m:15s]
Threads: 2: [_mm] [54.8% done] [  7602/  2944 kb/s] [eta 00m:14s]
Threads: 2: [_mm] [58.1% done] [  4702/  3672 kb/s] [eta 00m:13s]
Threads: 2: [_mm] [59.4% done] [  3331/  4490 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3707, got signal=6
Threads: 1: [__m] [62.5% done] [  5851/  1893 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3708, got signal=6

fio: (groupid=0): err= 0: pid=3706
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=5.4%, 2=5.4%, 4=10.8%, 8=78.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=0.0%, 100=5.4%
     lat (msec): 250=40.5%, 500=8.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3707
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.0%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=24.9%, 100=65.1%
     lat (msec): 250=7.4%, 500=1.2%, 750=0.1%, 1000=0.1%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=3708
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=9.9%, 8=89.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.3%, 20=5.0%, 50=21.4%, 100=57.8%
     lat (msec): 250=13.5%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=2566/3829, merge=263/30659, ticks=23092/1062216, in_queue=1010808, util=99.82%
0.20user 0.71system 0:21.55elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
267504inputs+147232outputs (0major+2446minor)pagefaults 0swaps