Install the Alternative PHP Cache (APC)
The Alternative PHP Cache (APC) is a free, open, and robust framework for caching and optimizing PHP intermediate code. yum install php-pear yum install php-devel httpd-devel yum groupinstall ‘Development Tools’ yum groupinstall ‘Development Libraries’ pecl install apc http://si2.php.net/manual/en/install.pecl.php