Block Timer is a module for analyzing page block performance.
It will display a small text box underneath each block title showing the time (in milliseconds) it took to render that block. Hovering your mouse over the text box will display a popup window with some more useful detail to help you analyze the load time of your pages.
Module to create popup 's through a content type where you can choose which pages the registered popup will appear. Read the file " README.TXT for more information about the module operation.