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] [14.3% done] [ 21362/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 12422/  7635 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 16367/  5068 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  7520/ 11950 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  4165/ 14169 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11950/  5332 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 16026/  2233 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  8049/  7679 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10370/  4924 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11458/  3359 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  4234/ 10032 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6015/  5515 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4912/  5627 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  3892/  5491 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5652/  4673 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  4555/  4100 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26749, got signal=6
Threads: 2: [m_m] [63.3% done] [  5084/  2887 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [64.5% done] [  1708/  4087 kb/s] [eta 00m:11s]
fio: pid=26750, got signal=6
Threads: 1: [m__] [67.7% done] [  1106/  4856 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26748, got signal=6

fio: (groupid=0): err= 0: pid=26748
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=13.0%, 100=38.2%
     lat (msec): 250=46.2%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26749
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=7.3%, 100=48.9%
     lat (msec): 250=42.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26750
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=10.0%, 100=44.2%
     lat (msec): 250=44.3%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3278/2708, merge=433/205, ticks=42204/36292, in_queue=78492, util=99.17%
0.20user 0.33system 0:21.55elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
370736inputs+243560outputs (0major+2461minor)pagefaults 0swaps