I have a large Drupal 7 website on my hands that is very large and has loads of modules (over 200). I am already seeing poor performance symptoms in the FPM logs with max_children limits reached on the Acquia server. I installed a profiler (blackfire) and the main issue (on every page) is an absurd amount of calls to unserialize (over 300) coming from DrupalDatabaseCacheprepareItem (autenticated). This happens even on a basic page. I am having a tough time coming up with a solid strategy to pinpoint the bottleneck and which module(s) are the culprit.
Anyone can help me with this?