Parallelize Linux system services to improve boot speed

This article shows you how to improve the boot speed of your #Linux system without compromising usability. Essentially, the technique involves understanding system services and their dependencies, and having them start up in parallel, rather than sequentially, when possible.
Although undoubtedly an excellent system, a common criticism of #Linux — voiced particularly by those from a Microsoft Windows background — is that it takes a long time between pressing the “on” button and actually being able to use a #Linux system. In essence, their argument goes, #Linux takes a long time to boot. More here