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] [12.5% done] [ 11662/ 10853 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.0% done] [ 12170/  7923 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 10711/  8370 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 16981/  1797 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  8627/  7585 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [  5434/ 11726 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  9684/  8041 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [  6875/  8293 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [  5507/  8977 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [ 10717/  4889 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  3860/  9814 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  8765/  4205 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6349/  5836 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  6589/  2912 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.7% done] [  9908/   846 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16643, got signal=6
Threads: 2: [m_m] [58.1% done] [  5889/  2456 kb/s] [eta 00m:13s]
Threads: 2: [m_m] [61.3% done] [  7858/  1570 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16642, got signal=6
Threads: 1: [__m] [62.5% done] [  1753/  5613 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16644, got signal=6

fio: (groupid=0): err= 0: pid=16642
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.8%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=10.5%, 100=38.3%
     lat (msec): 250=49.5%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16643
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.0%, 8=91.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.6%, 50=10.8%, 100=54.7%
     lat (msec): 250=31.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16644
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.1%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=21.2%, 100=21.6%
     lat (msec): 250=53.6%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3416/2595, merge=740/144, ticks=39392/43472, in_queue=82848, util=99.09%
0.21user 0.37system 0:21.39elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
353136inputs+260840outputs (0major+2457minor)pagefaults 0swaps