drupal module_list on every page load

Question

In my devel query info I see module_list being run on every page.

This should not be right?

I feel like there's a whole bunch of incorrectly ran queries being run on my site, (there's some unidentified problem), and this is the function that stood out to me.

Answer 1

It's used during bootstrap meaning it's run on all pages. Normally it will just return a static variable, but during bootstrap it'll need to run a query to build the variables..

Drupal uses it to find out which modules you have installed, so it's a very essential function.