Board Optimization - datastore cache to XCache - boost your vBulletin

中文用户讨论@vbulletin-china.cn

(note: do not apply this patch on vBulletin 3.7 as it's included already)
This patch allow you to use XCache as a datastore cache in vBulletin. This is definitely your choice if you have installed and enabled XCache on you server already.

Take care that this is a beta version and was not heavily tested. And i'm not familiar with vBulletin source code as i just started reading it today, but i don't have any difficulty reading it thanks to my years of php skill

Take aware that some vB plugin is not compatible with vB_datastore_*, not just vB_datastore_XCache. So, in case you find vB_datastore_XCache won't work, you'd better try datastore to file or memcache. If one of the others works but not vB_datastore_XCache, do report it to me so i can fix it.

Pre-requirement

• a working php installtion
• a working vBulletin 3.6.5 installtion
• a working XCache installtion
• set "xcache.var_size = 10M" or so in php ini

Install the modification
for those of you who can't run "patch", u may patch the file manually

• download Attachment 61372 (class_datastore_xcache.php)
• save the file as vBulletin.3.6/upload/includes/class_datastore_xcache.php
• open vBulletin.3.6/upload/includes/class_datastore.php in your favor editor
• add a line in class_datastore.php (see below)
• update upload/includes/config.php to enable it (see below)

example class_datastore.php after modification:

PHP Code:

        }
        return true;
    }
}

// add class_datastore_xcache, enable it in config.php
require_once(DIR . '/includes/class_datastore_xcache.php');

/*======================================================================*\
|| ####################################################################
|| # Downloaded: 12:33, Fri Mar 2nd 2007
|| # CVS: $RCSfile$ - $Revision: 15474 $
|| ####################################################################
\*======================================================================*/ 


example config.php after modification:

PHP Code:


    // vB_Datastore_Filecache  - for using a cache file
// $config['Datastore']['class'] = 'vB_Datastore_Filecache';
$config['Datastore']['class'] = 'vB_Datastore_XCache';
    // vB_Datastore_Memcached - for using a Memcache server
    // It is also necessary to specify the hostname or IP address and the port the server is listening on 


Trouble Shooting
q. i have multiple vBulletin instance installed, the seems to mix data after install this plugin
a. this applies to apc too because, if you wanna fix it, try
open class_core.php, look for:
$this->prefix =& $this->registry->config['Datastore']['prefix'];
and modify to:
$this->prefix = $this->registry->config['Datastore']['prefix'] . $_SERVER['SERVER_NAME']; // or HTTP_HOST

q. Warning: unserialize() expects parameter 1 to be string, array given in $a.php on line $b
a. upgrade your plugin/hack that $a.php belongs to, e.g. vbjournal/vbgallery etc. OR open $a.php and locate at line $b, remove unserialize call, e.g.:
replace $var = unserialize($this->data);
with $var = $this->data;
be careful do not remove the whole line, just the unseralize( and )

[hydn]

xcache.var_size = 4M or 8M is fine

Don't have to be the same size.

Why not use memcahce instead?

[Fenriz]

hydn, is it possible for xcache and memcached to co-exist? If I have xcache installed as an oppcache, how should I install memcached?

[hydn]

Originally Posted by Fenriz

hydn, is it possible for xcache and memcached to co-exist? If I have xcache installed as an oppcache, how should I install memcached?

Yes. It is. operation code and variable cache are two different things. If your database and web server are on the same box I would recommend you use xcache for opcode & datastore. If on separate boxes then use memcache for datastore of vb install on database server and xcache will run as usual on web server.

hope that helps.

[Fenriz]

Ok, thank you. My database and web server are on the same box, so I'll continue to use xcache for opcode & datastore.

One more question - Is it better to make xcache.so in xcache.ini installed as a zend_extension or php extension?

[hydn]

In IIS zend conflicted with xcache for me. If it works for you use it. But not necessary. If you do use it benchmark because i'm not sure it will make things faster with xcache.

[e7lew]

xcache installed in the server and i applied all changes

still getting the error above

Fatal error: Class vb_datastore_xcache: Cannot inherit from undefined class vb_datastore in /home/al7elwa/domains/al7elwa.com/public_html/board/includes/class_datastore_xcache.php on line 14

any help please

[Amaresh]

Thanks working fine on Cent OS with Lxadmin, lighttpd...

Though no benchmarks done yet.

[TheInsaneManiac]

3.7 anyone?

[Icy]

Originally Posted by TheInsaneManiac

3.7 anyone?

You don't need this plug-in in 3.7 because 3.7 already have this. You just have to enable it in your config.php under the ****** DATASTORE CACHE CONFIGURATION ***** option. Just type $config['Datastore']['class'] = 'vB_Datastore_XCache'; & save it.

[thompson]

Originally Posted by Icy

You don't need this plug-in in 3.7 because 3.7 already have this. You just have to enable it in your config.php under the ****** DATASTORE CACHE CONFIGURATION ***** option. Just type $config['Datastore']['class'] = 'vB_Datastore_XCache'; & save it.

and it works ? forums are really faster ?