1. 测试php-fpm配置

   /usr/local/php/sbin/php-fpm -t
   /usr/local/php/sbin/php-fpm -c /usr/local/php/etc/php.ini -y /usr/local/php/etc/php-fpm.conf -t
    
   2.启动php-fpm
   /usr/local/php/sbin/php-fpm
   /usr/local/php/sbin/php-fpm -c /usr/local/php/etc/php.ini -y /usr/local/php/etc/php-fpm.conf
    
   3.关闭php-fpm
   kill -INT `cat /usr/local/php/var/run/php-fpm.pid`
    
   4.重启php-fpm
   kill -USR2 `cat /usr/local/php/var/run/php-fpm.pid`  

、

5. /usr/local/php/etc/php-fpm.conf 

pm = dynamic  #fpm进程运行方式，可以设置成static，读取pm.max_children

pm.start_servers = 5  #开始启动数量

pm.min_spare_servers = 2 #最小空闲数量

参见：http://www.cnblogs.com/argb/p/3604340.html