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] [ 13527/ 10109 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 13845/  6910 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 16912/  3835 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [27.3% done] [ 14919/  4872 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10587/  9200 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  9904/  6996 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  9058/  8293 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [ 13238/  2515 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [47.8% done] [ 12340/  2420 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [50.0% done] [  6308/  6166 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  7626/  5572 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  4828/  6760 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9935/  1958 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  7097/  3038 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6223/  3925 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  3485/  5295 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [63.3% done] [  6280/  1301 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11644, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11643, got signal=6
Threads: 1: [__m] [66.7% done] [  5172/  1345 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11645, got signal=6

fio: (groupid=0): err= 0: pid=11643
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=1.9%, 50=9.7%, 100=45.3%
     lat (msec): 250=41.8%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11644
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=8.1%, 100=46.4%
     lat (msec): 250=43.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11645
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.6%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=1.4%, 50=9.4%, 100=40.3%
     lat (msec): 250=46.9%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3588/2147, merge=656/197, ticks=42124/33336, in_queue=75444, util=99.09%
0.25user 0.36system 0:20.92elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
398448inputs+215656outputs (0major+2458minor)pagefaults 0swaps