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] [10.7% done] [ 11291/  7716 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [14.8% done] [  7541/ 10852 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [17.9% done] [ 10766/  5202 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [22.2% done] [  4945/ 11706 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [25.9% done] [ 13349/  2037 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [28.6% done] [  9306/  5796 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [31.0% done] [ 10577/  3559 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [35.7% done] [ 10229/  4299 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [36.7% done] [ 11267/   679 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [40.0% done] [  4738/  8699 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [43.3% done] [  2603/  9477 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [45.2% done] [  8261/  4335 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [48.4% done] [  9644/  3957 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [51.6% done] [  5401/  7146 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.1% done] [  5751/  5698 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [56.2% done] [  4217/  8464 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [59.4% done] [  5840/  4287 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.6% done] [  4624/  4360 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.8% done] [  5259/  3494 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [62.9% done] [  4950/  2603 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28111, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28110, got signal=6
Threads: 1: [__m] [63.9% done] [  6716/   341 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28112, got signal=6

fio: (groupid=0): err= 0: pid=28110
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.5%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=1.0%, 50=24.4%, 100=40.9%
     lat (msec): 250=15.4%, 500=17.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28111
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=8.6%, 8=90.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.3%, 10=0.2%, 20=1.4%, 50=21.0%, 100=44.6%
     lat (msec): 250=13.4%, 500=18.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28112
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=9.2%, 8=90.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=25.7%, 100=36.8%
     lat (msec): 250=18.0%, 500=17.0%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3457/2160, merge=718/200, ticks=48744/41924, in_queue=90664, util=99.08%
0.66user 0.50system 0:24.45elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
377880inputs+236368outputs (0major+2475minor)pagefaults 0swaps