PHP Accelerator: Difference between revisions

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A [[wp:PHP_accelerator|PHP Acelerator]] is a tool that will enhance the performance of web applications written for the PHP scripting language. The free [http://php.net/apc Alternative PHP Cache] (APC) is distributed as a PEAR package.

A [[wp:PHP_accelerator|PHP Acelerator]] is a tool that will enhance the [[Performance_tuning|performance]] of web applications written for the PHP scripting language. The free [http://php.net/apc Alternative PHP Cache] (APC) is distributed as a PEAR package.

If you run your own LAMP server with PHP applications, then please install it.

If you run your own LAMP server with PHP applications, then please install it. The [[Moodle]] documentation includes information on [http://docs.moodle.org/en/Installing_APC_in_Windows setting up APC]; including testing before and after performance with "[http://httpd.apache.org/docs/2.0/programs/ab.html Apache Bench]"

== Installation ==

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sudo ln -s /usr/share/php/apc.php

</source>

== MediaWiki ==

MediaWiki can take advantage of the APC cache if you tell it to.

see [[mw:Manual:Configuration_settings#Cache|The Manual for cache settings]], and set [[mw:Manual:$wgMainCacheType]] in LocalSettings.php:

$wgMainCacheType = CACHE_ACCEL;

</source>

== Troubleshooting ==

If you notice sluggishness in your site after installing APC, then check out the front-end (apc.php). The sure sign that you need to increase your cache size is that the "cache full" count is greater than one.

[[Image:Apc-problems.png|200px|thumb|right|Cache is too small]]

# [[Performance_tuning|Check your memory]]

# Increase the Shared Memory Size for APC in your php.ini file e.g. <code>apc.shm_size = 128</code>

# Restart Apache

# Use the Apache Bench tool to test performance with and without APC enabled.

== Notes ==

APC, aside from speeding up your website, also provides a storage mechanism outside the traditional cookie/session mechanism. So, you could set an application variable or constant and (assuming that the cache is not cleared, etc.) retrieve that value from another context.

[[Category:Apache]]

[[Category:PHP]]

@@ Line 1: / Line 1: @@
-A [[wp:PHP_accelerator|PHP Acelerator]] is a tool that will enhance the performance of web applications written for the PHP scripting language.  The free [http://php.net/apc Alternative PHP Cache] (APC) is distributed as a PEAR package.
+A [[wp:PHP_accelerator|PHP Acelerator]] is a tool that will enhance the [[Performance_tuning|performance]] of web applications written for the PHP scripting language.  The free [http://php.net/apc Alternative PHP Cache] (APC) is distributed as a PEAR package.
-If you run your own LAMP server with PHP applications, then please install it.
+If you run your own LAMP server with PHP applications, then please install it.   The [[Moodle]] documentation includes information on [http://docs.moodle.org/en/Installing_APC_in_Windows setting up APC]; including testing before and after performance with "[http://httpd.apache.org/docs/2.0/programs/ab.html Apache Bench]"
 == Installation ==
@@ Line 22: / Line 22: @@
 sudo ln -s /usr/share/php/apc.php
 </source>
+== MediaWiki ==
+MediaWiki can take advantage of the APC cache if you tell it to.
+see [[mw:Manual:Configuration_settings#Cache|The Manual for cache settings]], and set [[mw:Manual:$wgMainCacheType]] in LocalSettings.php:
+<source lang="php">
+$wgMainCacheType = CACHE_ACCEL;
+</source>
+== Troubleshooting ==
+If you notice sluggishness in your site after installing APC, then check out the front-end (apc.php).  The sure sign that you need to increase your cache size is that the "cache full" count is greater than one.
+[[Image:Apc-problems.png|200px|thumb|right|Cache is too small]]
+# [[Performance_tuning|Check your memory]]
+# Increase the Shared Memory Size for APC in your php.ini file e.g. <code>apc.shm_size = 128</code>
+# Restart Apache
+# Use the Apache Bench tool to test performance with and without APC enabled.
 == Notes ==
 APC, aside from speeding up your website, also provides a storage mechanism outside the traditional cookie/session mechanism.  So, you could set an application variable or constant and (assuming that the cache is not cleared, etc.) retrieve that value from another context.
+[[Category:Apache]]
+[[Category:PHP]]