Profiling page rendering

Some webpages take 3 seconds to complete. The db queries are just fractions of this time. get_context_data and render_templates also take just a small fraction.
How can I debug where most of the time is spent?

The Django Debug Toolbar is a good place to start. Between the Time, SQL and Profiling tabs, you should be able to highlight the more time-consuming areas.

This is in local development environment?

D0 you have CDN’s or other static links in your source code?

Do you have some really heavy JS use?

Thanks for the replies guys.
I did install django toolbar as per @KenWhitesell recommendation.
The delay was eventually on the app logic phase (as expected, since queries and rendering were quiet quick)