hi everyone

this is my server information:

OS: CentOS7.1 (latest update)

server: DL 380 G7

ovirt: 3.6.2

[root@hv ~]# cat /proc/sys/fs/file-max 
4896581

[root@hv ~]# cat /proc/sys/fs/file-nr 
10416   0       4896581
[root@hv ~]# ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 192428
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 192428
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited


my open files seem to be increased:

[root@hv ~]# lsof |wc -l
1454641

acording my information  , do i need increase file descriptor? how can i increase them?  thanks inadvance