Stuff…

“XCache is a fast, stable  PHP opcode cacher that has been tested and is now running on production servers under high load. It is tested (on linux) and supported on all of the latest  PHP cvs branches.”

What we did to install it…

First, made sure that php-devel was installed from the Atomic repository.

# yum install php-devel
Running Transaction
Installing     : imake                                                                                                        1/4
Installing     : autoconf                                                                                                     2/4
Installing     : automake                                                                                                     3/4
Installing     : php-devel
…

Downloaded xcache.

# cd files
files# wget http://xcache.lighttpd.net/pub/Releases/1.3.0/xcache-1.3.0.tar.gz
files# tar -zxvf xcache-1.3.0.tar.gz
files# cd xcache-1.3.0

Ran phpize:

xcache-1.3.0# phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519

Ran:

xcache-1.3.0# ./configure –enable-xcache
xcache-1.3.0# make
xcache-1.3.0# make install
Installing shared extensions:     /usr/lib/php/modules/

Note: If the OS was running 64 bit it would have installed into /usr/lib64/php/modules

Now, it is time to configure xcache or simply copy over the xcache.ini file into /etc/php.d/ and modify.  The cyberciti.biz URL below includes a custom configuration file.

xcache-1.3.0# cp xcache.ini  /etc/php.d/
xcache-1.3.0# vi /etc/php.d/xcache.ini

Edit the configuration to suit your needs and restart your service:

# service httpd restart

Check xcache is working with a phpinfo() script on a site, or, run the command line “php -v“.

Links:

• http://www.cyberciti.biz/faq/howto-rhel-install-xcahce-php-opcode-cacher/
• http://xcache.lighttpd.net/wiki/Release-1.3.0
• http://serveradmins.net/tuning-xcache-for-fun-and-profit/