Grocery CRUD ajax performance

Question

I'm using Grocery Crud(1.4.1) with CI 2.1.4. The Grocery Crud worked in my local environment and our internal staging server. However, when we deployed the project to the live server, we ran into the performance issue. The pages which contains Grocery Crud loaded really slowly. Other pages (like login-check with db to login) is good for us. I have checked the "Network" panel in Chrome, looks like the Ajax calls like "ajax_list_info", "ajax_list" took a really long time to be completed (in our case is 30s). Please see the screenshot below:

I think there might be something with the live server configuration which blocked the Grocery Crud's performance. However, wanted to ask if anyone else has met this issue?

Answer 1

Thanks for the people who helped me with this issue. As I mentioned in the question, this issue does relate to our live server configuration. The PHP code:

session_start();

After we removed this line (we are using CodeIgniter's session library, so PHP session_start function is a redundant line in our code....), the application's performance was getting much better.

I'm new in PHP coding, and this one teaches me that if something slows the application performance, always look into the code you wrote first.

Thanks guys.