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] [13.6% done] [ 15664/  6288 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 21545/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 14032/  5064 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 10335/  9562 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [  5779/ 10990 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 13813/  4860 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  8692/  7740 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11108/  5336 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10917/  2623 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  4465/  9431 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8049/  3652 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  3681/  8102 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  8151/  3298 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  8301/  2204 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5121/  4295 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  2982/  5489 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  5649/  2582 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32571, got signal=6
Threads: 2: [m_m] [64.5% done] [  6202/  2086 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32572, got signal=6
Threads: 1: [m__] [65.6% done] [  8330/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=32570, got signal=6

fio: (groupid=0): err= 0: pid=32570
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.3%, 50=10.5%, 100=43.5%
     lat (msec): 250=42.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32571
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=6.5%, 100=54.1%
     lat (msec): 250=37.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=32572
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.5%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=2.0%, 50=9.4%, 100=46.7%
     lat (msec): 250=40.7%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3950/2236, merge=762/168, ticks=46532/35884, in_queue=82408, util=98.03%
0.19user 0.54system 0:22.04elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
413680inputs+200648outputs (0major+2460minor)pagefaults 0swaps