Some months ago, I had a talk on IRC with someone who had created a useful plugin for WordPress, which shows performance related information. The plugin is called Performance Probe. Its output is saved in text files. I had written a quick python script, for demonstration purposes only, that uses performance probe’s output and RRDTool to create a performance graph with WP loading times. The created RRA keeps data of one hour. This script is located here.
Information about its usage can be found inside the script. It is completely unsupported and it will not be further developed.
Special Note: My script visits the blog 60 times/hour, so do not run it on a production blog, unless you have adjusted your web server statistics analysis software to ignore those visits.
The WordPress Performance by George Notaras, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.