Profiler — What Slowing Down Your WP

Plugin allow you to run most important test for performance: request time, number of database queries, memory usage

You will be able to detect plugin which cause troubles and result with longer waiting time for request results

Testings are executed based on your homepage

How to use it?

In Dashboard go to Tools->Profiler What Slowing Down

Click on run test on all plugins (first link) and then near wanted plugin, run few tests and compare results

If you get significantly lower results, means that this plugin causing slowness

Hint: Lower numbers are better, means that page load faster without this specific plugin