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]

Originally Posted by MikeWarner

No - I need 100mb. I have tried to reduce it, but was getting ooms using 90mb. I'll give it a try later. Thanks.

ag OOMS ..thet u obiviously need 100 MB..(wondering how many things ur using)
then did u try 10 or 20 Mb for xcache.var_size ?

[bluechris]

Thx guys for the reply... i got it working now.. is there anyway that i can see stats of the site how is it going... what is cached etc?

[bluechris]

Nevermind i got the admin page working and i see the statistics... the point is i dont see cache working really... or i am mistaken.... see my php.ini settings

[xcache]
xcache.shm_scheme =        "mmap"
xcache.size  =                32M
xcache.count =                 2
xcache.slots =                8K
xcache.ttl   =                 0
xcache.gc_interval =           0

xcache.var_size  =            32M
xcache.var_count =             2
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 =    "c:/temp"

xcache.coredump_directory =   ""


xcache.cacher =               On
xcache.stat   =               On
xcache.optimizer =            On

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

Also in admin page of xcache i see this results in the attached gif.

the only 4 hits that had cached is the pages from admin of xcache, do i need to do something extra in my VB? or anywhere else?

[shifangjumie]

国内的兄弟？？

[Zia]

Originally Posted by bluechris

Nevermind i got the admin page working and i see the statistics... the point is i dont see cache working really... or i am mistaken.... see my php.ini settings

[xcache]
xcache.shm_scheme =        "mmap"
xcache.size  =                32M
xcache.count =                 2
xcache.slots =                8K
xcache.ttl   =                 0
xcache.gc_interval =           0

xcache.var_size  =            32M
xcache.var_count =             2
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 =    "c:/temp"

xcache.coredump_directory =   ""


xcache.cacher =               On
xcache.stat   =               On
xcache.optimizer =            On

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

Also in admin page of xcache i see this results in the attached gif.

the only 4 hits that had cached is the pages from admin of xcache, do i need to do something extra in my VB? or anywhere else?

Ur on win server?
seemed that ur cache is working...

i m confused ur var.cache is working or not .....did u follow all the steps properly to enable var.cache?

[phpxcache]

Originally Posted by bluechris

Nevermind i got the admin page working and i see the statistics... the point is i dont see cache working really... or i am mistaken.... see my php.ini settings
the only 4 hits that had cached is the pages from admin of xcache, do i need to do something extra in my VB? or anywhere else?

i assume you're usig windows, can u tell me how is your php installed? not the installtion steps, but about how it looks like. iis? apache? mod_fastcgi or not?


See Faq: Why is my cache being cleared?

[bluechris]

I use IIS with php 5.2.1 ... but i got the big picture from the links and other search i did on web...
I think the problem is that i use fast-cgi..... this dont not work good in windows cause caching programs cannot share among many worker processes that windows run for each user ... my 2 options now is run as isapi i suppose or w8 for something else...... i dont know what else i can do.

Originally Posted by Zia

Ur on win server?
seemed that ur cache is working...

i m confused ur var.cache is working or not .....did u follow all the steps properly to enable var.cache?

Yeap i got same statistics for var cache... says that hasn't cached anything.

[MikeWarner]

Getting this error:
Fatal error: Cannot redeclare class vb_datastore:vb_datastore_xcache in /home/migweb/public_html/forums/includes/class_datastore_xcache.php on line 14

I double checked everything.

[phpxcache]

Originally Posted by MikeWarner

Getting this error:
Fatal error: Cannot redeclare class vb_datastore:vb_datastore_xcache in /home/migweb/public_html/forums/includes/class_datastore_xcache.php on line 14

I double checked everything.

you gotta remove the old patch that you applied (inserted) to use the new installtion way.

search includes/* for string "vB_Datastore_XCache" (without the quotes)

[MikeWarner]

Hmmm... now getting:
Fatal error: XCache variable data cache is not enabled, please set xcache.var_size in php.ini in /includes/class_datastore_xcache.php on line 39

xcahce.var_size is set to 10 and is showing in the xcache cp.