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] [ 17323/  2875 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 19857/   927 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 17888/  2672 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 14679/  4238 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  7614/ 12926 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 12214/  4860 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 12316/  4726 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 13662/  2513 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  8224/  6776 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6658/  7345 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9265/  5133 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11364/  2509 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7195/  4458 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  4307/  6325 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5279/  3965 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  6312/  2778 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [63.3% done] [  5230/  3168 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2967, got signal=6
Threads: 2: [m_m] [66.7% done] [  4539/  2127 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2968, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2966, got signal=6

fio: (groupid=0): err= 0: pid=2966
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.6%, 100=41.5%
     lat (msec): 250=47.4%, 500=0.7%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2967
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=9.6%, 100=46.5%
     lat (msec): 250=42.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2968
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.9%, 50=6.8%, 100=41.9%
     lat (msec): 250=47.0%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3823/2104, merge=745/77, ticks=47412/29636, in_queue=77052, util=99.11%
0.15user 0.31system 0:21.35elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
421800inputs+192272outputs (0major+2456minor)pagefaults 0swaps