Issue status update for http://drupal.org/node/27901 Post a follow up: http://drupal.org/project/comments/add/27901 Project: Drupal Version: cvs Component: module system Category: feature requests Priority: normal Assigned to: Anonymous Reported by: Jose A Reyero Updated by: Jose A Reyero Status: patch (code needs review) Attachment: http://drupal.org/files/issues/on_demand_module_loading.patch (7.8 KB) As Drupal grows bigger, there is too much code not really needed parsed for each request. Also, installing more and more modules presents serious scalability issues, as all the enabled modules are included always for each non cached page. This is a first attempt to keep track of *all* module hooks, and only load modules when they're really needed. I guess it may need some polishing but the idea is simple enough. Currently, as the hook_menu is implemented by most of the modules, and it is called most of the times, the potential performance improvement introduced by this mechanism may be small. But the thing is, once he have some system for on demand module loading, hooks can be reworked in the future, to have some real performance boost. I.e. hook_menu could be easily split in two 'hook_menu' and 'hook_menu_dynamic', thus really reducing acually loaded modules. As I said, this is a first step. If there's some interest in this kind of features, I have some other things in the works aimed at performance and scalability, like: - (Simple) Rework of menu system to take real advantage of on demand module loading - Expand menu items to be able to include some file where the callback is in - Extend module loading for 'loading on path', and maybe 'loading split modules' - Some API loader, kind of api_invoke.... Jose A Reyero