vb.org Archive - [How to] Cut down on memory usage

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[How to] Cut down on memory usage

This is in the manual but I've yet to see it mentioned here.

Quote:

The plugin system works by storing all plugin code for all scripts in memory, so you can quickly find your plugins using large amounts of memory if they contain a lot of code.

A simple way to avoid this problem is to use the plugin code simply to call an external script, which contains all the complex code. In this way the code is only loaded when it is actually required.

For example, a plugin could contain this:

PHP Code:


		
			
$tmp_uid =& $vbulletin->userinfo['userid'];



$db->query_write("

  INSERT INTO " . TABLE_PREFIX . "profilelog

  (userid, dateline)

  VALUES

  ($tmp_uid, " . TIMENOW . ")

");

or alternatively, that code could be placed into a file called (for example) plugins/my_script.php, and the plugin itself would contain this:

PHP Code:


		
			
include('./plugins/my_script.php');

Naturally, the second option will use up far less memory than the first, and this saving will become more and more beneficial as the amount of code to be run increases.

You should also take a look at this project: https://vborg.vbsupport.ru/showthread.php?t=107315

Would this slow execution if lots of plugins were calling lots of files ?

Quote:

Originally Posted by Paul M

Would this slow execution if lots of plugins were calling lots of files ?

A lot less then housing all the PHP for all files in memory at all time.

The bulk of my processing is done via external files.

Quote:

Originally Posted by Paul M

Would this slow execution if lots of plugins were calling lots of files ?

I agree

I think files modifications would be better for this purpose

I have been thinking about creating an extension that will allow 'include-files' for plugins. They would be loaded as regular plugins (not file uploads), and can be loaded into memory whenever needed (for example: require_pluginlibrary_once('myfunctionlibraryplugi n'); ).

Like this you might get the best of both worlds:
- No file uploads
- Only loaded into memory when needed

I like that concept, I think I am going to play with this some more.

i'm ditching the plugin system on most of my larger sites. I'm just hardcoding the hacks. The plugin system is great in principal, but it eats up memory, increases queries, and slows down execution.

Quote:

Originally Posted by 99SIVTEC

i'm ditching the plugin system on most of my larger sites. I'm just hardcoding the hacks. The plugin system is great in principal, but it eats up memory, increases queries, and slows down execution.

Oh so true. If only there was a way to use this concept of the xml plugin to also upload a file like the above. So its not stored in memory.

Quote:

Originally Posted by 99SIVTEC

i'm ditching the plugin system on most of my larger sites. I'm just hardcoding the hacks. The plugin system is great in principal, but it eats up memory, increases queries, and slows down execution.

If coded for saving memory(ie. 99% of executable code in include files), a plugin don't need to use much memory, nor does it need to use more queries or slow down significantly.

Quote:

Originally Posted by Brad

This is in the manual but I've yet to see it mentioned here.

I feel better now. Somebody griped when I wrote my Amazon plugin this way :D

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