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] [13.6% done] [ 14077/  6963 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 15135/  6312 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 15262/  3835 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 10392/ 10181 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 14382/  5186 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 15513/  2200 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  8769/  7341 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11816/  4534 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10713/  5784 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11905/  2993 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  8899/  4969 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7317/  5511 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7236/  3571 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9648/   829 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8236/  1800 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7630/  1289 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7182, got signal=6
Threads: 2: [m_m] [61.3% done] [  6341/  1342 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7181, got signal=6
Threads: 1: [__m] [66.7% done] [  5759/  2009 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7183, got signal=6

fio: (groupid=0): err= 0: pid=7181
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=11.7%, 100=47.2%
     lat (msec): 250=39.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7182
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.1%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.1%, 50=8.7%, 100=52.6%
     lat (msec): 250=36.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7183
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=7.1%, 8=92.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.3%, 20=3.8%, 50=14.2%, 100=29.6%
     lat (msec): 250=50.4%, 500=0.9%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4107/1922, merge=632/105, ticks=48004/28488, in_queue=76488, util=99.02%
0.21user 0.37system 0:20.89elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
428280inputs+185920outputs (0major+2449minor)pagefaults 0swaps