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] [ 18535/  3795 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 14159/  7122 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 16135/  3188 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  9788/  9289 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [ 16746/  1590 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 12194/  5121 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  2836/ 13966 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 11262/  4718 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  6878/  7317 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10447/  3726 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  5112/  8017 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  9367/  2098 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9648/  3697 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  6556/  3717 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4348/  5971 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6180/  2982 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4693/  3274 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20854, got signal=6
Threads: 2: [mm_] [64.5% done] [  1586/  5641 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20853, got signal=6
Threads: 1: [m__] [65.6% done] [  3592/  3393 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20852, got signal=6

fio: (groupid=0): err= 0: pid=20852
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=10.7%, 100=40.7%
     lat (msec): 250=46.6%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20853
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=8.1%, 100=48.2%
     lat (msec): 250=41.3%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20854
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 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=0.2%, 50=9.3%, 100=47.8%
     lat (msec): 250=42.2%, 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=3502/2661, merge=571/136, ticks=44824/35920, in_queue=80748, util=97.01%
0.17user 0.78system 0:22.39elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
379648inputs+234264outputs (0major+2461minor)pagefaults 0swaps