Welcome to my favorite course!
The tar.bz2 file contains the bootchartd file that gets installed in /sbin/
It also contains a bootchart script that runs the java program to render the bootchart.tgz data, however the bootchart script is not installed you use it where you uncompressed the bz2 file
You can also use the form at the bottom of the above page to get your image
bootchartd image example from Gandalf
Another bootchart image for Fedora 15
As of 2006 bootchart is no longer updated. So here are some alternative links.
Wikipedia: Linux startup process
opensource.com: An introduction to the Linux boot and startup processes (2017)
The Fedora Books I used
to seup my recent desktop & servers: Fedora
18 Linux: Networking and Servers & Fedora
18 Desktop: Appllications and Administration
Older Ubuntu Server Books
Official Ubuntu Server Book - 978-0-13-702118-5 and the Ubuntu
version of Linux Toolbox: 1000+ Commands - 978-0470082935)