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] [ 16412/  6144 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 17848/  3961 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 11410/  9329 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [  9819/  8179 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 11524/  6712 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10909/  7773 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 10461/  7146 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 15167/   744 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 12894/  2863 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  7171/  6943 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10075/  4148 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 11055/  2058 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 10152/  1683 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6902/  3583 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5210/  3628 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5861/  2660 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5031/  3359 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26842, got signal=6
Threads: 2: [mm_] [64.5% done] [  4531/  2448 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26841, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26840, got signal=6

fio: (groupid=0): err= 0: pid=26840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.6%, 8=96.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=9.4%, 100=45.6%
     lat (msec): 250=43.1%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26841
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=10.5%, 100=48.5%
     lat (msec): 250=39.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26842
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.3%, 50=9.1%, 100=49.6%
     lat (msec): 250=40.4%, 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=3573/2251, merge=588/139, ticks=43172/31824, in_queue=74988, util=98.37%
0.28user 0.47system 0:21.44elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
388832inputs+225216outputs (0major+2456minor)pagefaults 0swaps