今天调整了服务器的PHP-FPM配置,其中有几个参数可以在网站在高并发下,保持服务器的稳定.不会挂掉.请看下面的内容.

代码:

        <value name="max_children">5</value>

        Settings group for 'apache-like' pm style
        <value name="apache_like">

          Sets the number of server processes created on startup.
          Used only when 'apache-like' pm_style is selected
          <value name="StartServers">20</value>

          Sets the desired minimum number of idle server processes.
          Used only when 'apache-like' pm_style is selected
          <value name="MinSpareServers">5</value>

          Sets the desired maximum number of idle server processes.
          Used only when 'apache-like' pm_style is selected
          <value name="MaxSpareServers">35</value>

<value name="rlimit_files">65535</value>

<value name="max_requests">1024</value>

When you running a highload website with PHP-FPM via FastCGI, the following tips may be useful to you : )如果您高负载网站使用PHP-FPM管理FastCGI，这些技巧也许对您有 用：)1. Compile PHP’s modules as less as possible, the simple the best (fast);1.尽量少安装PHP模块，最简单是最好（快）的2. Increas PHP FastCGI child number to 100 and even more. Sometime, 200 is OK! ( On 4GB memory server);2.把您的PHP FastCGI子进程数调到100或以上，在4G内存的服务器上200就可以注：我的1g测试机，开64个是最好的，建议使用压力测试获取最佳值3. Using SOCKET PHP FastCGI, and put into /dev/shm on Linux;3.使用socket连接FastCGI，linux操作系统可以放在 /dev/shm中注：在php-fpm.cnf里设置/tmp/nginx.socket就可以通过socket连接 FastCGI了，/dev/shm是内存文件系统，放在内存中肯定会快了4. Increase Linux “max open files”, using the following command (must be root):

echo ‘ulimit -HSn 65536′ » /etc/profile

echo ‘ulimit -HSn 65536 » /etc/rc.local

source /etc/profile 4.调高linux内核打开文件数量，可以使用这些命令(必须是root帐号)

echo ‘ulimit -HSn 65536’ » /etc/profile

echo ‘ulimit -HSn 65536’ » /etc/rc.local

source /etc/profile 注：我是修改/etc/rc.local，加入ulimit -SHn 51200的5. Increase PHP-FPM open file description rlimit:

vi /path/to/php-fpm.conf

Find “1024”

Change 1024 to 4096 or higher number.

Restart PHP-FPM.5. 增加 PHP-FPM 打开文件描述符的限制:

vi /path/to/php-fpm.conf

找到“1024”

把1024 更改为 4096 或者更高.

重启 PHP-FPM.6. Using PHP code accelerator, e.g eAccelerator, XCache. And set “cache_dir” to /dev/shm on Linux.6.使用php代码加速器，例如 eAccelerator, XCache.在linux平台上可以把cache_dir指向 /dev/shm

来源: http://groups.google.com/group/highl…412d43c1c3f36a

• nginx
• php-fpm