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] [ 17624/  5202 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 11547/ 10323 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 14508/  6015 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 10026/  8533 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11641/  6825 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14667/  3176 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 11405/  5340 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  4364/ 10957 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  6182/  8037 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  5840/  8826 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8871/  4824 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11027/  1037 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10246/  2847 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6060/  4502 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  2765/  5686 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7525/  2121 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3095/  4201 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16524, got signal=6
Threads: 2: [m_m] [64.5% done] [  2668/  3831 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16525, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16523, got signal=6

fio: (groupid=0): err= 0: pid=16523
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.4%, 50=9.6%, 100=44.8%
     lat (msec): 250=41.2%, 500=1.0%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16524
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=7.8%, 100=46.5%
     lat (msec): 250=44.6%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16525
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.4%, 50=9.0%, 100=48.0%
     lat (msec): 250=39.5%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3409/2537, merge=428/145, ticks=41132/35048, in_queue=76164, util=99.14%
0.20user 0.42system 0:21.30elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
364208inputs+250088outputs (0major+2461minor)pagefaults 0swaps