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] [12.0% done] [ 17005/  4360 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 14409/  6347 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 12377/  6760 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [25.0% done] [ 16245/  6026 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [  7505/ 10747 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 10004/  6842 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 17363/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 16619/   735 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 14120/  3011 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6654/  6447 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7537/  5392 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 10447/  3222 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6460/  4933 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6769/  4087 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7456/  2820 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6302/  2848 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [65.5% done] [  5514/  3905 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31366, got signal=6
Threads: 2: [_mm] [64.5% done] [  3921/  2515 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31367, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31368, got signal=6

fio: (groupid=0): err= 0: pid=31366
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.8%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=2.2%, 50=3.5%, 100=49.3%
     lat (msec): 250=44.1%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31367
  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=0.4%, 20=0.8%, 50=7.3%, 100=44.8%
     lat (msec): 250=46.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31368
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.4%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.0%, 20=1.2%, 50=9.6%, 100=42.4%
     lat (msec): 250=45.1%, 500=0.4%, 750=0.5%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3850/2025, merge=700/59, ticks=46920/30160, in_queue=77076, util=98.75%
0.24user 0.50system 0:21.25elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
421112inputs+193184outputs (0major+2460minor)pagefaults 0swaps