Board Optimization - datastore cache to XCache - boost your vBulletin

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(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 )

[Icy]

Originally Posted by thompson

and it works ? forums are really faster ?

I think so. Actually I'm using it since it's been released here. So it's kind of hard to say that forums are really faster or not. But the caching works flawlessly.

[Zia]

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?

No U dont need memcache at all.. Xcache will do everything for u and it works better (most of the review says it all)

[asasi]

Hi
I followed installation path but some pages on my forum will open just showthread.php has problem. when I try to open a threat I have 500 internal server error !
This is my php.ini file in forum folder:

[PHP]



[xcache]
zend_extension="/usr/php4/lib/php/extensions/no-debug-non-zts-20020429/xcache.so"
xcache.cacher = On
xcache.test=1
xcache.size = 1M
xcache.count = 1
xcache.var_size = 10M
xcache.var_count = 1
xcache.var_slots = 1000
; xcache.mmap_path = "/dev/zero"
xcache.mmap_path = "/home/ziafatco/tmp/xcache"
xcache.readonly_protection = Off
xcache.optimizer = Off
xcache.coredump_directory = "/home/ziafatco/tmp"
;xcache.coveragedump_directory = "/tmp/pcov/"
xcache.coverager = On

thanks in advance

[GTX2]

I've tried everything and after three days trying to install xcache, everything is ok now when checking phpinfo, but when browsing forums i get always this error:

xcache.var_size is either 0 or too small to enable var data caching

in phpinfo i have xcache.var_size = 64MB
but in php.ini i have xcache.var_size = 4MB


How to solve this ?
thanks


PS- sorry replying such old thread