Redhat / CentOS / Fedora Linux Install XCache for PHP 5
Q. How do I install Xcache opcode cacher for PHP 5 under RHEL / CentOS version 5.0 server?
A. XCache is a open-source opcode cacher, which means that it accelerates the performance of PHP on servers. It optimizes performance by removing the compilation time of PHP scripts by caching the compiled state of PHP scripts into the shm (RAM) and uses the compiled version straight from the RAM. This will increase the rate of page generation time by up to 5 times as it also optimizes many other aspects of php scripts and reduce serverload.
Step # 1: Download xcahce source code
Use wget command to download latest stable release:
# cd /opt
# wget http://xcache.lighttpd.net/pub/Releases/1.2.1/xcache-1.2.1.tar.gz
Step # 2: Untar tar ball
Use tar command:
# tar -zxvf xcache-1.2.1.tar.gz
# cd xcache-1.2.1
Step # 2: Compile and install xcahce
Use phpize command to prepare xcache as a PHP extension for compiling:
# phpize
Configure, compile and install xcache:
# ./configure --enable-xcache
# make
# make install
Default xcache.so installation location
- 64 bit PHP module installed at /usr/lib64/php/modules/xcache.so
- 32 bit PHP module installed at /usr/lib/php/modules/xcache.so
Step # 3: Create xcache.ini file
Under RHEL / CentOS, you place php modules configuration at /etc/php.d/ directory:
# cd /etc/php.d/
Create xcahce.ini file:
# vi xcahce.ini
Append configuration directives:
[xcache-common] ; change me - 64 bit php => /usr/lib64/php/modules/xcache.so ; 32 bit php => /usr/lib/php/modules/xcache.so zend_extension = /usr/lib64/php/modules/xcache.so [xcache.admin] xcache.admin.auth = On xcache.admin.user = "mOo" ; xcache.admin.pass = md5($your_password) xcache.admin.pass = "" [xcache] xcache.shm_scheme = "mmap" xcache.size = 32M xcache.count = 1 xcache.slots = 8K xcache.ttl = 3600 xcache.gc_interval = 300 ; Same as aboves but for variable cache ; If you don't know for sure that you need this, you probably don't xcache.var_size = 0M xcache.var_count = 1 xcache.var_slots = 8K xcache.var_ttl = 0 xcache.var_maxttl = 0 xcache.var_gc_interval = 300 ; N/A for /dev/zero xcache.readonly_protection = Off xcache.mmap_path = "/dev/zero" xcache.cacher = On xcache.stat = On
Save and close the file.
Alternatively, you can also copy default xcache.ini to /etc/php.d/
# cp xcache.ini /etc/php.d/
# vi /etc/php.d/xcache.ini
Restart your Apache web server:
# service httpd restart
If you are using Lighttpd web server, enter:
# service lighttpd restart
Step # 4: Make sure xcache is working
Type the following command for verification:
$ php -v
Output:
PHP 5.1.6 (cli) (built: Nov 20 2007 11:11:52)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
with XCache v1.2.1, Copyright (c) 2005-2007, by mOo
You should see line "XCache v1.2.1, Copyright (c) 2005-2007, by mOo"
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Tags: CentOS, centos install php xcache, fedora install php xcache, php opcode, redhat install php xcache, rhel install php xcache, tar_command, wget_command, xcache source code installation ~ Last updated on: November 24, 2007
November 26th, 2007 at 3:32 am
Currently in Freebsd with php5, apache22 and xdebug2,
xcache could not work with this combination.
Could you figure out to use xcache with above ones?
Thanks
November 26th, 2007 at 6:47 am
IT only works with the following PHP cvs branches versions (php 5.0 is not supported, get php 5.2)
PHP_4_3
PHP_4_4
PHP_5_1
PHP_5_2
PHP HEAD(6.x)
January 2nd, 2008 at 1:06 pm
For me this didn’t work untill I enabled two settings in php.ini file
; Directory in which the loadable extensions (modules) reside.
extension_dir = “/usr/local/lib/php/extensions/no-debug-non-zts-20060613/”
; Dynamic Extensions
extension=xcache.so
April 1st, 2008 at 5:04 am
phpize isn’t found on my CentOS4 server.
is there an alternate command?
April 1st, 2008 at 5:58 am
Ken,
Install php-devel package - which lets you compile dynamic extensions to PHP. This package has phpize command. Use yum command to install the same.