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] [14.3% done] [ 10636/ 10034 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 17413/  3762 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 13284/  6699 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 12405/  6121 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 12869/  5478 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  4344/ 13719 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10018/  6674 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12698/  3908 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11999/  2969 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9957/  5023 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  9627/  3888 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8822/  4161 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  8135/  4242 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5865/  3945 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  3400/  6056 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3591/  4848 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8409, got signal=6
Threads: 2: [m_m] [63.3% done] [  2460/  4234 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  4527/  3014 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8410, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.7% done] [  2843/  2631 kb/s] [eta 00m:10s]
fio: pid=8408, got signal=6

fio: (groupid=0): err= 0: pid=8408
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.2%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=0.8%, 50=12.0%, 100=40.4%
     lat (msec): 250=44.7%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8409
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=8.5%, 100=48.6%
     lat (msec): 250=41.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8410
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=9.4%, 100=46.3%
     lat (msec): 250=42.2%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3297/2426, merge=524/245, ticks=42076/34188, in_queue=76264, util=99.23%
0.16user 0.38system 0:21.50elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
382680inputs+231160outputs (0major+2461minor)pagefaults 0swaps