Ever wondered what takes your Linux box so long to boot up? You can see for certain with the Bootchart package. Bootchart logs the entire startup process and produces a clean, graphical representation of its results suitable for everything from troubleshooting to good old-fashioned bragging rights.

The process of booting a Linux® system consists of a number of stages. But whether you're booting a standard x86 desktop or a deeply embedded PowerPC® target, much of the flow is surprisingly similar. This article explores the Linux boot process from the initial bootstrap to the start of the first user-space application.

Compare to earlier ubuntu versions karmic is much better in speed but if you still want to reduce your boot times use ubuntu boot Packages containing instrumentation to aid in boot performance work, and packages proposed to improve performance.

By using profile, a profile of your boot is kept to make your next boot faster.

Boot Chart for LInux is a simple way to automatically make a chart consisting of the applications your computer runs at boot, with the time it takes to load each app. Here is an example:

Here we’ll talk about Bootchart, it’s hiding in your apt repo:

One of the biggest complaints about Linux®, particularly from developers, is the speed with which Linux boots. By default, Linux is a general-purpose operating system that can serve as a client desktop or server right out of the box. Because of this flexibility, Linux serves a wide base but is suboptimal for any particular configuration.

So I have a laptop that I've been upgrading since Hardy (currently on Karmic Alpha) that I would like to boot faster. It has probably accumulated a lot of crufty daemons along the way that probably aren't being pre-loaded into memory. I picked up this tidbit from the fast boot expert. Add profile to your kernel command-line (at the grub prompt, press Esc e and then edit the line).

Sometimes you need to run a script on boot process, for example run an iptables config at boot process. So you don’t have to run the script manually every rebooting.