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] [ 10934/ 10370 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14606/  6076 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [  9973/  9485 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 12471/  6715 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 13329/  4486 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 17307/   996 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 15476/  1720 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12763/  3396 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 10689/  2696 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 12711/  2916 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10872/  2652 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  6288/  5173 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  3929/  7171 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4901/  5535 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6158/  4238 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6406/  2985 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4372/  3823 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1348, got signal=6
Threads: 2: [_mm] [62.5% done] [  4344/  2631 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1349, got signal=6
Threads: 1: [__m] [65.6% done] [  5531/  1179 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1350, got signal=6

fio: (groupid=0): err= 0: pid=1348
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.8%, 100=46.6%
     lat (msec): 250=43.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1349
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=2.1%, 50=10.3%, 100=43.4%
     lat (msec): 250=43.0%, 500=0.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1350
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.5%, 50=12.0%, 100=43.2%
     lat (msec): 250=42.4%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3804/2347, merge=483/153, ticks=46956/35656, in_queue=82604, util=99.14%
0.24user 0.36system 0:21.80elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
410560inputs+203632outputs (0major+2456minor)pagefaults 0swaps