Issue
As an Acquia Cloud Site Factory customer, you may want to make an increase to the default memory limit.
Resolution
For Acquia Cloud Site Factory, you must use factory hooks to add conditional memory code in a PHP file to the factory-hooks/pre-settings-php directory.
Increase for all requests
To make increases to the default PHP memory_limit for all Drupal requests, please file a support ticket.
Increase for a specific page/path
If you need to increase the memory limit only for a certain page or pages, then we recommend increasing the memory conditionally for a given path. This leaves the memory allocated for typical pages with the default value and your site more robust on the ACSF platform.
myfactory@web-777:/var/www/html/myfactory.01live/factory-hooks/pre-settings-php$ cat pre_settings.php
<?php
if (strpos($_GET['q'], 'admin/structure/menu/') === 0) {
ini_set('memory_limit', '700M');
}