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] [ 16615/  4514 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 17905/  2233 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14720/  5816 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 12576/  5885 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  8911/  9070 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 13662/  3481 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 14419/  3054 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 11271/  5267 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [  8558/  7256 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  8773/  5723 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [ 11999/  2106 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 10640/  2204 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  6308/  5369 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [ 10587/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.7% done] [ 10913/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2044, got signal=6
Threads: 2: [mm_] [58.1% done] [  8741/   935 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [59.4% done] [  2460/  4990 kb/s] [eta 00m:13s]
fio: pid=2043, got signal=6
Threads: 1: [m__] [64.5% done] [   911/  6975 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2042, got signal=6

fio: (groupid=0): err= 0: pid=2042
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=8.2%, 8=91.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.4%, 50=23.5%, 100=19.4%
     lat (msec): 250=52.0%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2043
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=0.5%, 50=14.3%, 100=42.4%
     lat (msec): 250=41.5%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2044
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=7.5%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=1.7%, 50=10.9%, 100=56.4%
     lat (msec): 250=30.6%, 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=4177/1839, merge=571/137, ticks=50792/22396, in_queue=73176, util=97.98%
0.18user 0.58system 0:21.40elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
438168inputs+176688outputs (0major+2457minor)pagefaults 0swaps