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Do non-enabled Drupal modules affect performance?

up vote 14 down vote favorite

Does having Drupal modules present, but not enabled have any effect on the performance of a Drupal site?

To put it another way.. Would removing disabled modules from a Drupal site have a positive affect on performance?

2 Answers

up vote 4 down vote accept

Generally no it will not affect performance - except for when you are viewing your Modules selection page (admin/build/modules or admin/modules). Disabled modules are not loaded into memory and never executed.

up vote 3 down vote

From my experience, the performance decrease from disabled modules is negligible (and relative, 4000 disabled modules might make things a little slower than 30 disabled modules, etc.)

Personally, I'm just more concerned about unused (and probably outdated) code sitting in my repo and web dirs, but I'm anally retentive like that.


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Do non-enabled Drupal modules affect performance?

up vote 14 down vote

Does having Drupal modules present, but not enabled have any effect on the performance of a Drupal site?

To put it another way.. Would removing disabled modules from a Drupal site have a positive affect on performance?


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up vote 9 down vote

Generally no it will not affect performance - except for when you are viewing your Modules selection page (admin/build/modules or admin/modules). Disabled modules are not loaded into memory and never executed.

edit

That being said, disabled modules still leave behind variables and database tables so that the module can be re-enabled without data loss. If you do not plan on using a disabled module again, you should uninstall the module via admin/build/modules/uninstall in D6 or admin/modules/uninstall in D7. - Dave Reid Aug 18 '11 at 16:14

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