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 )

[DssCrazy]

So this will boost the speed of your site? also does this work on version:3.6.8?

[Zia]

Originally Posted by vissa

Yup, this doesn't work with VbJounal.. Also has problems (still) with vbgallery (or photopost vbgallery or whatever). I asked a few times what actions can be done code-wise to fix similar problem with mods, but I received no response. It's too bad because this does help a lot.

-vissa

u can report it
http://xcache.lighttpd.net/report
OR u can post it at
http://forum.lighttpd.net/forum/4

Originally Posted by Yellow Slider

I'm Using this hack for quite a long time now, and in the last few days the board seem to be slowing down with no reason, what do i Need to watch in the XCache fields? do i need to increase a var in the settings?
I'm using orban's temp' cach hack, i know that it's in the grave yard but its' working fine for me..

my board is running on C2D server with 2 GB ram.

increasing var size - firstly u need to chk- if there any OOMs or not- unless u dont need to increase-
slowing down the site- there mite be many reason

Originally Posted by DssCrazy

So this will boost the speed of your site? also does this work on version:3.6.8?

yes- working with 3.6.8 - No Problem at all

[Tralala80]

Can someone post a working php.ini (the xcache part) ?

I continuously get the following error:
Fatal error: XCache not installed in /includes/class_datastore_xcache.php on line 34

Link to phpInfo:
http://74.86.70.196/phpinfo.php

Here's my php.ini xCache part:

[Zend]
zend_extension=/usr/local/Zend/lib/ZendExtensionManager.so
zend_extension_ts=/usr/local/Zend/lib/ZendExtensionManager_TS.so

[xcache-common]
;; install as zend extension (recommended)
 zend_extension = /usr/local/lib/php/extensions/no-debug-non-zts-20060613/xcache.so
;; install as zend extension with thread-safe
; zend_extension_ts = /usr/local/lib/php/extensions/non-debug-zts-xxx/xcache.so
;; install as PHP extension (extension_dir must be set to the full path to xcache.so)
; extension = xcache.so

[xcache.admin]
xcache.admin.user = "Trajcek"
xcache.admin.pass = md5($mymd5ishere)

[xcache]
xcache.shm_scheme = "mmap"
xcache.size = 16M
xcache.count = 1
xcache.slots = 8K
xcache.ttl = 0
xcache.gc_interval = 0

xcache.var_size = 2M
xcache.var_count = 1
xcache.var_slots = 8K
xcache.var_ttl = 0
xcache.var_maxttl = 0
xcache.var_gc_interval = 300

xcache.test = Off
xcache.readonly_protection = Off
xcache.mmap_path = "/dev/zero"
xcache.coredump_directory = ""
xcache.cacher = On
xcache.stat = On
xcache.optimizer = Off

[xcache.coverager]
xcache.coverager = Off
xcache.coveragedump_directory = ""

There are some cases too when apache fails to start

[Paul M]

Just in case no one has noticed yet - xcache support has been added to vbulletin 3.7.

[Icy]

Yesh! I'm using 3.7 I noticed it last night.

[Hoffi]

That's great!

[SeV3n]

MM it's a great modz but it has strange behaviors on my server. I got 2 vbulletin board on the same machine and using xcache datastore on both i got the same datastore on them even if the link to different db. :P

[phpxcache]

i've added trouble shooting at the first post for those who have problem with a. mixing data, b. unserialize() warning

[SeV3n]

Originally Posted by phpxcache

i've added trouble shooting at the first post for those who have problem with a. mixing data, b. unserialize() warning

Ops i missed that advice... sorry.

( phpxcache are you mOO the xcache dev? )

[phpxcache]

Originally Posted by SeV3n

Ops i missed that advice... sorry.

( phpxcache are you mOO the xcache dev? )

never mind, the advice was post after your reply
and yes, i am.