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] [8.3% done] [  9562/  9156 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.1% done] [  8289/  8635 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [13.9% done] [ 10508/  6375 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [16.2% done] [  9237/  7805 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [19.4% done] [ 11788/  4668 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [22.2% done] [ 12637/  2965 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.7% done] [  2982/ 11085 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [28.6% done] [  6975/  7158 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [30.6% done] [  9004/  4299 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [34.3% done] [ 11702/  2460 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [37.1% done] [  9574/  2460 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.0% done] [ 12040/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [41.7% done] [  8001/  4051 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [43.2% done] [  5944/  4603 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [45.9% done] [  5084/  5474 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [48.6% done] [  4234/  4189 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.4% done] [  9020/   325 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [52.6% done] [  7899/  1708 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.3% done] [  3717/  3465 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [57.9% done] [  4958/  3319 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [60.5% done] [  6083/  1702 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31764, got signal=6
Threads: 2: [m_m] [61.5% done] [  4689/  2363 kb/s] [eta 00m:15s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31765, got signal=6
Threads: 1: [m__] [65.8% done] [  6268/   785 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31763, got signal=6

fio: (groupid=0): err= 0: pid=31763
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=16.4%, 8=83.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=5.0%, 50=50.0%, 100=10.1%
     lat (msec): 250=12.4%, 500=21.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31764
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=16.2%, 8=83.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.3%, 50=51.9%, 100=7.4%
     lat (msec): 250=16.3%, 500=20.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31765
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=12.6%, 8=87.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.0%, 50=51.1%, 100=8.4%
     lat (msec): 250=15.5%, 500=22.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3661/1831, merge=521/473, ticks=52516/31576, in_queue=84092, util=98.53%
0.64user 0.49system 0:25.90elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
401352inputs+212920outputs (0major+2474minor)pagefaults 0swaps