php 参数优化

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一、修改php参数

1、修改php启动的配置文件
vi /usr/local/webserver/php/etc/php-fpm.conf

php5.2.x

max_children
修改为200对应4G
修改为300对应8G

php5.3.x

ps:如果pm=static

     pm.max_children：静态方式下开启的php-fpm进程数量。

ps:如果pm=dynamic

     pm.start_servers：动态方式下的起始php-fpm进程数量
     pm.min_spare_servers：动态方式下的最小php-fpm进程数量
     pm.max_spare_servers：动态方式下的最大php-fpm进程数量

2、rlimit_files
修改为65535

二、修改系统参数

1、系统参数

vi /etc/sysctl.conf

net.ipv4.tcp_max_syn_backlog = 65536
net.core.netdev_max_backlog = 32768
net.core.somaxconn = 32768

net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216

net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2

net.ipv4.tcp_tw_recycle = 1
#net.ipv4.tcp_tw_len = 1
net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_max_orphans = 3276800
#
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 120
net.ipv4.ip_local_port_range = 1024 65535
#
vm.overcommit_memory = 1

2、调高linux内核打开文件数量

1）环境变量调整
echo 'ulimit -HSn 65535' >> /etc/profile
echo 'ulimit -HSn 65535' >> /etc/rc.local

source /etc/profile

2）、limits.conf调整
vi /etc/security/limits.conf

*        soft    nofile 65535
*        hard    nofile 65535

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