drupal stuck at admin and getting slow - how to troubleshoot a modules?

Question

how do i detect what module causes the whole site to be slow? i recentcly added some new modules and one of them i think causes me problems

Answer 1

The Drupal handbooks have a page on server tuning considerations.

Some methods include installing the Devel module to track down slow queries or profile memory usage. Or you can selectively disable modules, to track down the offender.