继续上文CentOS6.5 Nginx优化编译配置本文记录有关Nginx系统环境的一些细节设置，有关Nginx性能调整除了配置文件吻合服务器硬件之前就是关闭不必要的服务、磁盘操作、文件描述符、内核调整等。

 

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1、关闭系统中不需要的服务

###Centos minimal  本来就是最小安装，这里我也就不提建议了，跟着自己的环境来###[root@i-it ~]# chkconfig --list

auditd         	0:off	1:off	2:on	3:on	4:on	5:on	6:off

blk-availability	0:off	1:on	2:on	3:on	4:on	5:on	6:off

crond          	0:off	1:off	2:on	3:on	4:on	5:on	6:off

ip6tables      	0:off	1:off	2:on	3:on	4:on	5:on	6:off

iptables       	0:off	1:off	2:on	3:on	4:on	5:on	6:off

iscsi          	0:off	1:off	2:off	3:on	4:on	5:on	6:off

iscsid         	0:off	1:off	2:off	3:on	4:on	5:on	6:off

lvm2-monitor   	0:off	1:on	2:on	3:on	4:on	5:on	6:off

mdmonitor      	0:off	1:off	2:on	3:on	4:on	5:on	6:off

multipathd     	0:off	1:off	2:off	3:off	4:off	5:off	6:off

netconsole     	0:off	1:off	2:off	3:off	4:off	5:off	6:off

netfs          	0:off	1:off	2:off	3:on	4:on	5:on	6:off

network        	0:off	1:off	2:on	3:on	4:on	5:on	6:off

nginx          	0:off	1:off	2:on	3:on	4:on	5:on	6:off

postfix        	0:off	1:off	2:on	3:on	4:on	5:on	6:off

rdisc          	0:off	1:off	2:off	3:off	4:off	5:off	6:off

restorecond    	0:off	1:off	2:off	3:off	4:off	5:off	6:off

rsyslog        	0:off	1:off	2:on	3:on	4:on	5:on	6:off

saslauthd      	0:off	1:off	2:off	3:off	4:off	5:off	6:off

sshd           	0:off	1:off	2:on	3:on	4:on	5:on	6:off

udev-post      	0:off	1:on	2:on	3:on	4:on	5:on	6:off

 
2、清除文件描述符

###建议先备份一下###[root@i-it ~]# ll /software/nginx/sbin/nginx  -h

-rwxr-xr-x.1 root root 2.9MJun800:02/software/nginx/sbin/nginx

[root@i-it ~]# strip /software/nginx/sbin/nginx 

[root@i-it ~]# ll /software/nginx/sbin/nginx  -h

-rwxr-xr-x.1 root root 2.6MJun801:54/software/nginx/sbin/nginx

 
2、优化写磁盘操作

####重新挂载当前分区，不记录Nginx对文件访问的时间修改####

mount -o defaults,noatime,nodiratime -o remount /dev/sda1

 
3、优化文件描述符

####修改配置文件####[root@i-it ~]# egrep -v "^#|^$"/etc/security/limits.conf

*-       nofile          65535*-       nproc           65535[root@i-it ~]# su -[root@i-it ~]# ulimit -u

65535[root@i-it ~]# ulimit -n

65535

 
4、优化内核参数

[root@i-it ~]# cat >/etc/sysctl.conf<