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 )

[SeV3n]

Originally Posted by phpxcache

and yes, i am.

Great to hear
OT: Anyway I've just added you on MSN (i opened Ticket #158).

[Ata123]

Originally Posted by da420

I applied the patch, and all I get is a blank page when accessing the forum.

I got a blank page, too, and no php error messages.

Removing blank lines at the bottom of class_datastore_xcache.php (any blank lines after ?> ) fixed it for me

[netwind]

Does this hack must share variable $forumcache ?
I install all software. Checking xcache admin : variable 'forumcache' eats 1.8Mb.
ok but where is memory ?
Here debug from vbulletin :

Time Before: 0.00148 seconds
Time After: 0.00185 seconds
Time Taken: 0.00037 seconds

Memory Before: 196.090 KB
Memory After: 197.766 KB
Memory Used: 1.676 KB
Datastore Setup

Time Before: 0.00201 seconds
Time After: 0.04075 seconds
Time Taken: 0.03874 seconds

Memory Before: 197.926 KB
Memory After: 7,868.695 KB
Memory Used: 7,670.770 KB

is it normal ?

[poprulz]

Disable other extension and see

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

Save and restart httpd, check php.info and see xcache is installed.

Originally Posted by 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

[PING1434a]

Hi, Just wondering
Any way to get around these errors?

Warning: xcache_get() [function.xcache-get]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 85

Warning: xcache_get() [function.xcache-get]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 85

Warning: xcache_get() [function.xcache-get]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 85

Warning: xcache_set() [function.xcache-set]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 124

Warning: xcache_unset() [function.xcache-unset]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 123

Warning: xcache_set() [function.xcache-set]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 124

Warning: xcache_unset() [function.xcache-unset]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 123

Warning: xcache_set() [function.xcache-set]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 124

Warning: xcache_unset() [function.xcache-unset]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 123

Warning: xcache_set() [function.xcache-set]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 124

I'm getting that everypage even with plug-in system turned off at moment.

[phpxcache]

Originally Posted by PING1434a

Hi, Just wondering
Any way to get around these errors?

Warning: xcache_get() [function.xcache-get]: xcache.var_size is either 0 or too small to enable var data caching in /includes/class_datastore_xcache.php on line 85

I'm getting that everypage even with plug-in system turned off at moment.

check your phpinfo() page and see if XCache gets loaded and set properly, make sure you've updated the correct php.ini

[TheMilkCarton]

Are there ways to make MORE use of the datastore with vBulletin? Only 24 things are caching in Xcache and they're barely taking any space... I'd just like to make more use of my var cache.

[Zia]

Originally Posted by TheMilkCarton

Are there ways to make MORE use of the datastore with vBulletin? Only 24 things are caching in Xcache and they're barely taking any space... I'd just like to make more use of my var cache.

Try
https://vborg.vbsupport.ru/showthrea...ghlight=xcache by Lendy

this mod use varcache
(discission is urs use it or not)

[doraj]

Hello

An information please...I use vBSeo 3.1

In Control Panel vBSeo there is : Caching Options

Cache Type (BETA)
Select the caching system to use from the list below. Make sure that your server supports the selected cache type.

• memcached
• APC Cache
• XCache
• eAccelerator

If I active XCache here (for vBSeo options), Can I also install and active Datastore Cache to config.php or not?
Two activations can create some conflicts?

Thanks

[dtv100]

OK when bar look really low mean is time to clear or to add more than 64mb to settings?