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] [  9444/ 11441 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 15289/  6536 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 11535/  6813 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10884/  9566 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 13675/  5625 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 16176/  1797 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 13283/  4729 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10974/  4193 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 15472/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  7712/  6137 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  6007/  5906 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7732/  4742 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7793/  3888 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  4632/  5104 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6259/  3611 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8008/  1537 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23333, got signal=6
Threads: 2: [m_m] [63.3% done] [  4767/  2753 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [66.7% done] [  5007/  1980 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23332, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23334, got signal=6

fio: (groupid=0): err= 0: pid=23332
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.4%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=0.4%, 50=7.5%, 100=48.5%
     lat (msec): 250=42.1%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23333
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=7.9%, 100=51.5%
     lat (msec): 250=38.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23334
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.3%, 100=46.6%
     lat (msec): 250=42.3%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3485/2296, merge=563/162, ticks=42288/33352, in_queue=75632, util=99.42%
0.34user 0.27system 0:21.28elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
381072inputs+232896outputs (0major+2459minor)pagefaults 0swaps