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] [13.0% done] [ 17225/  5588 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 13134/  8082 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 10181/ 11763 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 12645/  5857 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 13020/  7280 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [  9814/  7398 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [34.6% done] [ 12292/  4702 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  8867/  6638 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 14130/   870 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 12007/  2127 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9941/  4344 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10726/  2399 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 10172/  1598 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 11031/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7748/  1545 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6748, got signal=6
Threads: 2: [mm_] [60.0% done] [  4929/  2558 kb/s] [eta 00m:12s]
Threads: 2: [mm_] [63.3% done] [  4311/  3115 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6747, got signal=6
Threads: 1: [m__] [66.7% done] [  1265/  5169 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6746, got signal=6

fio: (groupid=0): err= 0: pid=6746
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.7%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.5%, 10=0.4%, 20=1.6%, 50=16.8%, 100=35.5%
     lat (msec): 250=43.5%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6747
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.1%, 50=9.1%, 100=55.0%
     lat (msec): 250=33.3%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6748
  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=0.8%, 50=8.6%, 100=62.7%
     lat (msec): 250=27.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3731/1910, merge=574/190, ticks=43268/25480, in_queue=68748, util=99.05%
0.20user 0.29system 0:20.78elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
411032inputs+203136outputs (0major+2453minor)pagefaults 0swaps