P3 (Plugin Performance Profiler)的作者是GoDaddy.com,目前有70,000+个有效安装。已经Tested with 4.1.30版本的wordpress。
This plugin creates a profile of your WordPress site’s plugins’ performance by measuring their impact on your site’s load time.  Often times, WordPress sites load slowly because of poorly configured plugins or because there are so many of them. By using the P3 plugin, you can narrow down anything causing slowness on your site.
This plugin uses the canvas element for drawing charts and requires requires Firefox, Chrome, Opera, Safari, or IE9 or later. This plugin will not work in IE8 or lower.