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] [ 11979/  7805 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 12860/  7610 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [  5869/ 12312 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [ 12413/  6891 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  9650/  7716 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 12340/  5987 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 13723/  2660 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 12983/  3969 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10538/  4620 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 10174/  4616 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 12430/  2348 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6890/  6207 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11580/   366 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 11490/   858 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5401/  4055 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7594/  2774 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7230, got signal=6
Threads: 2: [m_m] [63.3% done] [  7919/     0 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  6821/   923 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7229, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=7231, got signal=6

fio: (groupid=0): err= 0: pid=7229
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.9%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=0.4%, 50=9.2%, 100=48.5%
     lat (msec): 250=40.9%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7230
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=9.7%, 100=46.9%
     lat (msec): 250=41.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=7231
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=3.2%, 50=8.1%, 100=45.9%
     lat (msec): 250=41.8%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4284/1792, merge=569/101, ticks=50888/27472, in_queue=78356, util=99.09%
0.19user 0.37system 0:21.36elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
438088inputs+176000outputs (0major+2449minor)pagefaults 0swaps