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php-fpm优化小结

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Jun 13, 2016 pm 12:17 PM

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php-fpm优化总结

环境：php5.6.1

1.如何启用？
编译安装时加上--enable-fpm
2.如何优化?
优化之前根据业务需求规划，然后必须做压力测试；
优化的主要文件就是php-fpm.conf

(1)进程数设置

pm = dynamic

pm.max_children = 15

pm.start_servers = 5

pm.min_spare_servers = 5

pm.max_spare_servers = 15

(2)最大处理请求数

最大处理请求数是指一个php-fpm的worker进程在处理多少个请求后就终止掉，master进程会重新respawn新的。

该配置可以避免php解释器自身或程序引起的memory leaks。

默认值是500，

pm.max_requests = 1024

这样的规划，1秒钟

最大请求数：15*1024=15360

最小请求数：5*1024=7120

3.如何避免程序hang死？
在负载较高的服务器上定时重载php-fpm
reload可以平滑重启而不影响生产系统的php脚本运行
每15分钟reload一次
0-59/15 * * * * /usr/local/php/sbin/php-fpm reload

本文只讨论了php-fpm的优化

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