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] [14.3% done] [ 20687/  3421 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [  3925/ 16830 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 14474/  6501 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 18911/   702 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [30.4% done] [  9155/  7013 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  7992/  8309 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 11255/  4388 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 11966/  3567 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  4563/  9740 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6367/  6818 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7021/  5725 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  6200/  5997 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8334/  3965 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8667/  1844 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4433/  4144 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  5185/  3762 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5185/  3697 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  3835/  2913 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23635, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23636, got signal=6
Threads: 1: [m__] [67.7% done] [  6367/  1239 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23634, got signal=6

fio: (groupid=0): err= 0: pid=23634
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=6.8%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=3.3%, 50=10.0%, 100=36.6%
     lat (msec): 250=48.2%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23635
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=7.1%, 100=52.3%
     lat (msec): 250=39.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23636
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=4.2%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=1.3%, 50=7.8%, 100=41.3%
     lat (msec): 250=48.4%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3651/2540, merge=585/152, ticks=45164/39504, in_queue=84664, util=98.91%
0.21user 0.62system 0:21.93elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
381760inputs+232448outputs (0major+2459minor)pagefaults 0swaps