Nov 022006
 

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PHP Accelerators and cachers will increase the performance of your PHP applications, by caching the compiled form of php scripts . A PHP accelerator typically reduces server load and increases the speed of your PHP scripts between 1 to 10 times.


We have presently 3 good php accelerators from opensource i.e eAccelerator,APC,xcache and now we will see these three php accelerators how to install and configure in debian and ubuntu machines

eAccelerator

eAccelerator is a free open-source PHP accelerator, optimizer, encoder and dynamic content cache. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times.

Project Home page

http://www.eaccelerator.net/

Latest stable version:0.9.5

Install eAccelerator in debian

First you need to download php4-dev package which we need to compile eAccelerator

#apt-get install php4-dev

If you are using php5 install the following package

#apt-get install php5-dev

Download eAccelerator source package from here

#wget http://bart.eaccelerator.net/source/0.9.5/eaccelerator-0.9.5.tar.bz2

Extract the downloaded file using the following command

#tar jxvf eaccelerator-0.9.5.tar.bz2

#cd eaccelerator-0.9.5

Running phpize creates config file which is needed in make.

#phpize

#./configure --enable-eaccelerator=shared --with-php-config=/usr/bin/php-config

#make

#make install

This will complete the installation.

Now you need to Edit the file /etc/php4/apache2/php.ini for php4 users and add following lines to install php extension

#vi /etc/php4/apache2/php.ini

extension="eaccelerator.so"
eaccelerator.shm_size="16″
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1″
eaccelerator.optimizer="1″
eaccelerator.check_mtime="1″
eaccelerator.debug="0″
eaccelerator.filter=""
eaccelerator.shm_max="0″
eaccelerator.shm_ttl="0″
eaccelerator.shm_prune_period="0″
eaccelerator.shm_only="0″
eaccelerator.compress="1″
eaccelerator.compress_level="9″

If you want to install as Zend extension you need to enter the following lines in /etc/php4/apache2/php.ini file

zend_extension="/usr/lib/php4/eaccelerator.so"
eaccelerator.shm_size="16″
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1″
eaccelerator.optimizer="1″
eaccelerator.check_mtime="1″
eaccelerator.debug="0″
eaccelerator.filter=""
eaccelerator.shm_max="0″
eaccelerator.shm_ttl="0″
eaccelerator.shm_prune_period="0″
eaccelerator.shm_only="0″
eaccelerator.compress="1″
eaccelerator.compress_level="9″

If you use a thread safe build of PHP you must use "zend_extension_ts" instead of "zend_extension".

If you are using PHP5 you need to edit the /etc/php5/apache2/php.ini file

Creating cache directory

One last very important step is creating the cache directory that you configured in the previous step. The default value is /tmp/eaccelerator It's easy because it's writable to everyone.

A safe bet is making it world writable. A safer and cleaner way would be to change the owner of the directory to the same user PHP runs as (most of the time the same user as Apache or Lighttpd) and set 0644 permissions

#mkdir /tmp/eaccelerator

#chmod 0777 /tmp/eaccelerator

Restart apache and you're finished with the eAccelerator configuration

#/etc/init.d/apache2 restart

Testing Your eaccelerator installation

Create test.php file with following lines on it

<?php
eaccelerator();
?>

If you have eAccelerator info shown on that page, accelerator is working fine.

or you can use the following command

#php -v

Since eAccelerator first stores compiled PHP pages in shared memory, then on disk when that runs out, the size of the shared memory pool will likely have the largest impact on performance.

Install eAccelerator in Ubuntu

First you need to download php4-dev package which we need to compile eAccelerator

sudo apt-get install php4-dev

If you are using php5 install the following package

sudo apt-get install php5-dev

Download eAccelerator source package from here http://sourceforge.net/project/showfiles.php?group_id=122249

wget http://bart.eaccelerator.net/source/0.9.5/eaccelerator-0.9.5.tar.bz2

Extract the downloaded file using the following command

sudo tar jxvf eaccelerator-0.9.5.tar.bz2

cd eaccelerator-0.9.5

Running phpize creates config file which is needed in make.

sudo phpize

sudo ./configure --enable-eaccelerator=shared --with-php-config=/usr/bin/php-config

sudo make

sudo make install

This will complete the installation.

Now you need to Edit the file /etc/php4/apache2/php.ini for php4 users and add following lines to install php extension

sudo vi /etc/php4/apache2/php.ini

extension="eaccelerator.so"
eaccelerator.shm_size="16″
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1″
eaccelerator.optimizer="1″
eaccelerator.check_mtime="1″
eaccelerator.debug="0″
eaccelerator.filter=""
eaccelerator.shm_max="0″
eaccelerator.shm_ttl="0″
eaccelerator.shm_prune_period="0″
eaccelerator.shm_only="0″
eaccelerator.compress="1″
eaccelerator.compress_level="9″

If you want to install as Zend extension you need to enter the following lines in /etc/php4/apache2/php.ini file

zend_extension="/usr/lib/php4/eaccelerator.so"
eaccelerator.shm_size="16″
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1″
eaccelerator.optimizer="1″
eaccelerator.check_mtime="1″
eaccelerator.debug="0″
eaccelerator.filter=""
eaccelerator.shm_max="0″
eaccelerator.shm_ttl="0″
eaccelerator.shm_prune_period="0″
eaccelerator.shm_only="0″
eaccelerator.compress="1″
eaccelerator.compress_level="9″

If you use a thread safe build of PHP you must use "zend_extension_ts" instead of "zend_extension".

If you are using PHP5 you need to edit the /etc/php5/apache2/php.ini file

Creating cache directory

One last very important step is creating the cache directory that you configured in the previous step. The default value is /tmp/eaccelerator It's easy because it's writable to everyone.

A safe bet is making it world writable. A safer and cleaner way would be to change the owner of the directory to the same user PHP runs as (most of the time the same user as Apache or Lighttpd) and set 0644 permissions

sudo mkdir /tmp/eaccelerator

sudo chmod 0777 /tmp/eaccelerator

Restart apache and you're finished with the eAccelerator configuration

#/etc/init.d/apache2 restart

Testing Your eaccelerator installation

Create test.php file with following lines on it

<?php
eaccelerator();
?>

If you have eAccelerator info shown on that page, accelerator is working fine.

or you can use the following command

#php -v

Alternative PHP Cache (APC)

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. It was conceived of to provide a free, open, and robust framework for caching and optimizing PHP intermediate code.

Project Home page

http://pecl.php.net/package/APC

Latest stable version: 3.0.12p2

Install Alternative PHP Cache (APC) in debian

Install all the required packages

#apt-get install apache2-threaded-dev php4-dev php4-pear make gcc g++

If you are using php5 use the following

#apt-get install apache2-threaded-dev php5-dev php5-pear make gcc g++

Preparing for pecl

I am using Apache2 and PHP4 on my server.If you are using Apache2, the apxs is named differently, and pecl will fail if you do not work around this. You had to provide an apxs which is just a symbolic link.

#ln -s /usr/bin/apxs2 /usr/bin/apxs

Install APC Using pecl

#pecl install apc

If you are using apache2 you need to make sure you have created symbolic link for apxs2

Configuring APC

Now you need to edit your php.ini file and add the extension=apc.so

#vi /etc/php4/apache2/php.ini

If you are using php5 edit the following file

#vi /etc/php5/apache2/php.ini

add the following line

extension=apc.so

save the file and exit

Restart apache server using the following server

#/etc/init.d/apache2 restart

Install Alternative PHP Cache (APC) in Ubuntu

Install all the required packages

sudo apt-get install apache2-threaded-dev php4-dev php4-pear make gcc g++

If you are using php5 use the following

sudo apt-get install apache2-threaded-dev php5-dev php5-pear make gcc g++

Preparing for pecl

I am using Apache2 and PHP4 on my server.If you are using Apache2, the apxs is named differently, and pecl will fail if you do not work around this. You had to provide an apxs which is just a symbolic link.

ln -s /usr/bin/apxs2 /usr/bin/apxs

Install APC Using pecl

sudo pecl install apc

If you are using apache2 you need to make sure you have created symbolic link for apxs2

Configuring APC

Now you need to edit your php.ini file and add the extension=apc.so

sudo vi /etc/php4/apache2/php.ini

If you are using php5 edit the following file

sudo vi /etc/php5/apache2/php.ini

add the following line

extension=apc.so

save the file and exit

Restart apache server using the following server

sudo /etc/init.d/apache2 restart

XCache

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 such as PHP_4_3 PHP_4_4 PHP_5_0 PHP_5_1 PHP_5_2 HEAD(6.x). ThreadSafe/Windows is also supported. It overcomes a lot of problems that has been with other competing opcachers such as being able to be used with new PHP versions.

Project Home page

http://trac.lighttpd.net/xcache/

Latest Stable Version

1.0.3-rc1

Install xcache in debian sarge

Preparing your system

#apt-get install gcc g++ make

Download xcache source code using the following command

#wget http://210.51.190.228/pub/XCache/rc/1.0.3-rc1/xcache-1.0.3-rc1.tar.gz

Extract the file using the following command

#tar xzvf xcache-1.0.3-rc1.tar.gz

Now you should be having xcache directory

Now you need to go inside xcache directory

#cd xcache

Run the following command

#phpize
Configuring for:
PHP Api Version: 20020918
Zend Module Api No: 20020429
Zend Extension Api No: 20021010

#./configure --enable-xcache

#make

#make install

#cat xcache.ini >> /etc/php4/apache2/php.ini

Now you need to configure the following settings in /etc/php4/apache2/php.ini file

zend_extension = /usr/lib/php4/20050606/xcache.so

xcache.size = 64M

xcache.cacher = On

restart your apache server using the following command

#/etc/init.d/apache2 restart

Install xcache in debian etch

If you are using debian etch you need to use the following comamnd for php4 users

#apt-get install php4-xcache

Now you need to configure the following settings in /etc/php4/apache2/php.ini file

zend_extension = /usr/lib/php4/20050606/xcache.so

xcache.size = 64M

xcache.cacher = On

restart your apache server using the following command

#/etc/init.d/apache2 restart

For php5 users

#apt-get install php5-xcache

Now you need to configure the following settings in /etc/php5/apache2/php.ini file

zend_extension = /usr/lib/php5/20050606/xcache.so

xcache.size = 64M

xcache.cacher = On

restart your apache server using the following command

#/etc/init.d/apache2 restart

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 Posted by at 10:28 am
  • Scott P.

    In your write-up, you state the following:

    If you have eAccelerator info shown on that page, accelerator is working fine.

    or you can use the following command

    #php -v

    Neither of these commands works, at least not with version 0.9.5. The only way to tell is by using phpinfo(); and scrolling down to the eaccelerator section. Hope this helps somebody else out! Thanks for the guide!

  • Powerlord

    It should be noted that pecl is not available in Debian stable (Sarge). It is part of the php-pear in testing (Etch) and unstable (Sid).

  • http://www.csamuel.org/ Chris Samuel

    xcache isn’t packaged in Debian Etch, it’s only in testing and unstable according to the Debian site.

  • Carlos Ch

    Thanks Scott. Your feedback was indeed helpful!

  • Faisal Alim

    Thanks Scott. I install APC (Ubuntu).

    1 thing wanna know – why do we need to install apache2-threaded-dev?
    Reason why im asking is because i install LAMP with apache2 preforked.

    And when i did your step to install APC (ubuntu) – it removed my apache2-preforked to apache2-threaded.

    Thanks in adv.
    Faisal

  • Doug

    Ubuntu Gutsy or Hardy

    sudo apt-get install php5-xcache

    vi /etc/php5/apache2/conf.d/xcache.ini

    modify settings as desired. for the web interface:

    cp -a /usr/share/xcache/admin /var/www/xcache-web

    edit username/password in xcache.ini as above, point browser to http://localhost/xcache-web/

  • Carol

    Thanks for the helpful tutorial. Is there a typo in “Install Alternative PHP Cache (APC) in Ubuntu”

    If you are using php5 use the following

    sudo apt-get install apache2-threaded-dev php5-dev php5-pear make gcc g++

    should be: sudo apt-get install apache2-threaded-dev php-dev php5-pear make gcc g++

  • Carol

    Sorry, there was a typo in my correction!

    February 9th, 2009 at 1:11 pm

    Thanks for the helpful tutorial. Is there a typo in “Install Alternative PHP Cache (APC) in Ubuntu”

    If you are using php5 use the following

    sudo apt-get install apache2-threaded-dev php5-dev php5-pear make gcc g++

    should be: sudo apt-get install apache2-threaded-dev php5-dev php-pear make gcc g++

  • http://typo3-agentur.typo3-fanworld.de Internetagentur

    Thank you, this little tutorials has me very helped.