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] [ 11563/  7663 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 10102/ 10094 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 11385/  9021 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  5006/ 13925 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 10050/  8647 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 13715/  3217 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 16408/  2096 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  7325/  7260 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  6459/  8810 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  3405/  9870 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  9465/  4311 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  9827/  2704 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9732/  2450 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8224/  3282 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5698/  3205 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  4441/  5422 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [63.3% done] [  4506/  3904 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  3469/  3203 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18779, got signal=6
fio: pid=18780, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18778, got signal=6

fio: (groupid=0): err= 0: pid=18778
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.4%, 50=11.0%, 100=37.2%
     lat (msec): 250=47.8%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18779
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.0%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.1%, 10=0.1%, 20=1.1%, 50=9.6%, 100=43.3%
     lat (msec): 250=45.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18780
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.7%, 8=96.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.2%, 100=42.5%
     lat (msec): 250=47.0%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3460/2648, merge=447/330, ticks=43056/44900, in_queue=87944, util=98.95%
0.20user 0.32system 0:21.76elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
369040inputs+245120outputs (0major+2460minor)pagefaults 0swaps