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] [ 12658/  7732 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17298/  3888 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 21423/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 12153/  7261 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 14366/  4702 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14911/  3237 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  4331/ 12349 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 13377/  4091 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 15777/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 13527/  1076 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  8163/  4832 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7432/  5221 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  6983/  3579 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  7407/  3047 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5698/  3636 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7398/  2306 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] [  5739/  1301 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [67.6% done] [  1028/  1513 kb/s] [eta 00m:11s]
fio: pid=6878, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6876, got signal=6
fio: pid=6877, got signal=6

fio: (groupid=0): err= 0: pid=6876
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.2%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=1.0%, 50=14.3%, 100=44.4%
     lat (msec): 250=38.7%, 500=0.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6877
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.0%, 50=9.1%, 100=49.8%
     lat (msec): 250=37.8%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6878
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.2%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=2.5%, 50=9.6%, 100=52.7%
     lat (msec): 250=34.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3965/1787, merge=672/117, ticks=46204/24104, in_queue=70304, util=88.57%
0.24user 0.34system 0:23.51elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
444704inputs+169712outputs (0major+2457minor)pagefaults 0swaps