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 )

[Zia]

Helo code Mokey..

do u mind to report it at
http://trac.lighttpd.net/xcache/
with ur info..

Thanks

[Code Monkey]

I had to turn this off. It doesn' seem to update the cache from the command line. Meaning, when a script that updates the datastore is run in a browser it works fine, when it's run as a server cron it does nothing. I'm not sure if it's a vBulletin issue or an xcache issue. I just have no time to look into it right now.

[NeutralizeR]

Originally Posted by Code Monkey

I had to turn this off. It doesn' seem to update the cache from the command line. Meaning, when a script that updates the datastore is run in a browser it works fine, when it's run as a server cron it does nothing. I'm not sure if it's a vBulletin issue or an xcache issue. I just have no time to look into it right now.

Hi,

Thanks for the tip for:

PHP Code:

if(!defined('VBA_SCRIPT'))
{
    $config['Datastore']['class'] = 'vB_Datastore_XCache';
} 


I use this hack for the cron:
https://vborg.vbsupport.ru/showthread.php?t=123719

Maybe you should give a try because it doesn't seem i have any cron issues...

[Code Monkey]

LOL, very cute showing me my own hack. However, I am refering to server cron. I have some very intensive scripts on certain sites that run every few minutes and need to be run using the command line.

Now that the xcache forums are back up I see it does not support cli yet. So I will wait. Meanwhile, it does a great job caching and optimizing the PHP scripts.

[foulplay]

I just installed xcache and my boards are running smooth and fast.

I will install this hack once all the bugs have been fixed.

[NeutralizeR]

Originally Posted by Code Monkey

LOL, very cute showing me my own hack. However, I am refering to server cron. I have some very intensive scripts on certain sites that run every few minutes and need to be run using the command line.

Now that the xcache forums are back up I see it does not support cli yet. So I will wait. Meanwhile, it does a great job caching and optimizing the PHP scripts.

I knew i'd seen your name before :P

I also have cronjobs set to run every few minutes (via cpanel - rsync between multiple servers)

They are fine for me.

[Code Monkey]

Originally Posted by NeutralizeR

I knew i'd seen your name before :P

I also have cronjobs set to run every few minutes (via cpanel - rsync between multiple servers)

They are fine for me.

That's very interesting since the xcache website says it does not support the command line interface at this time.

[IsMaR]

how do install xcache in first place

[NeutralizeR]

Originally Posted by Code Monkey

That's very interesting since the xcache website says it does not support the command line interface at this time.

Maybe we are still talking about the different things but whatever Peace...

[TECK]

Personally, I would not go this way.
I prefer installing memcached (for datastore) then use XCache for the rest of the php files.
From my tests, this combination improves the VB performance by over 250%. Expecially if you use 2 servers or more for your site.

An example: With the above setup, the forumhome memory usage drops from 3,500KB to 720KB.
The rest is cached by the memcached/XCache combo.

Still, that does not say your code is bad. Congrats on a good idea.