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] [ 10800/ 10739 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 14957/  6842 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 12019/  7614 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 15180/  4022 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 14421/  3384 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9293/  8903 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 10179/  6375 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 14370/  2147 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 14128/  2470 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12166/  2352 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 11560/  2767 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 10910/  2478 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5617/  5873 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  5107/  5969 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4148/  5201 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4908/  4449 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6282/  2328 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13100, got signal=6
Threads: 2: [m_m] [64.5% done] [  5144/  1861 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13099, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13101, got signal=6

fio: (groupid=0): err= 0: pid=13099
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.6%, 50=7.1%, 100=44.0%
     lat (msec): 250=46.0%, 500=0.4%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13100
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.0%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=8.9%, 100=45.0%
     lat (msec): 250=44.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13101
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=7.3%, 100=39.5%
     lat (msec): 250=49.9%, 500=1.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3686/2108, merge=557/176, ticks=46684/30916, in_queue=77600, util=97.85%
0.44user 0.73system 0:21.40elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k
405368inputs+208112outputs (0major+2448minor)pagefaults 0swaps