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] [ 22950/     0 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 16900/  3323 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 15335/  5660 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  6615/ 10707 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 12348/  5737 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 16652/  1588 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 12032/  4230 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9906/  5599 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [42.3% done] [  5556/  7943 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  4937/  9276 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8569/  4689 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10868/  2448 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  6737/  6367 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9561/  1137 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  8090/  2807 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  3742/  4396 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4659, got signal=6
Threads: 2: [m_m] [63.3% done] [  4673/  2828 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  5214/  2013 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4658, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [67.7% done] [  7005/   264 kb/s] [eta 00m:10s]
fio: pid=4660, got signal=6

fio: (groupid=0): err= 0: pid=4658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.8%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.6%, 50=8.2%, 100=44.0%
     lat (msec): 250=44.4%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4659
  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=0.8%, 50=6.9%, 100=51.2%
     lat (msec): 250=40.4%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4660
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.3%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=3.7%, 50=10.2%, 100=43.6%
     lat (msec): 250=40.7%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4044/2124, merge=638/309, ticks=48604/81816, in_queue=106368, util=99.71%
0.32user 0.69system 0:21.53elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
432928inputs+181448outputs (0major+2454minor)pagefaults 0swaps