Pingdom have announced Real User Monitoring (RUM) to your WordPress site with a new plugin.
To use the plugin you need to:
If you don’t have one already, create a Pingdom account.
Create a RUM site.
Install the plugin on your site
From your WordPress administration interface, go to Plugins > Add new. Once there, search for “Pingdom” or “real user monitoring.”
Click Install Now and follow the instructions.
Now go to Plugins > Pingdom Real User Monitoring. There you will find further instructions for how to enable RUM on your WordPress site.
Once the plugin is installed, you can view the results on the RUM page in your Pingdom control panel at my.pingdom.com.
Download: http://wordpress.org/extend/plugins/real-user-monitoring-by-pingdom/