If you have any idea how to do this for any other web server not listed here, let me know and I will place the information here.
justice.js, embeddable script for displaying perf metrics
justice.js A performance metric bar with a streaming FPS graph.
Open Source Web Performance Dashboard
It's no secret anymore, you need to keep track of your web sites performance. Having a fast site will make your users happy.
Firefox : copy() command added to console
Firefox DevTools Update: copy() command added to console
Costly functions chart on Timeline
Chrome DevTools Update: Costly functions chart on Timeline