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] [ 11357/  9118 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 21220/  1382 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 14378/  5348 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  9740/  8557 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 18340/   898 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 13772/  3685 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13980/  3136 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11039/  6369 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 13097/  2725 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10754/  3624 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  7146/  6117 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  6825/  5019 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6569/  5649 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [ 11608/   154 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8834/  1549 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7703/  1647 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15495, got signal=6
Threads: 2: [m_m] [63.3% done] [  4148/  3315 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15496, got signal=6
Threads: 1: [m__] [64.5% done] [  7366/   516 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15494, got signal=6

fio: (groupid=0): err= 0: pid=15494
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.8%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.2%, 20=2.7%, 50=14.1%, 100=38.5%
     lat (msec): 250=42.8%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15495
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.8%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.9%, 50=9.7%, 100=49.2%
     lat (msec): 250=37.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15496
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.1%, 50=8.5%, 100=48.0%
     lat (msec): 250=40.4%, 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=4052/1753, merge=760/141, ticks=46016/25160, in_queue=71172, util=98.13%
0.36user 0.54system 0:21.13elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
439136inputs+175208outputs (0major+2450minor)pagefaults 0swaps