Linux is one of the hottest topics in the IT industry today-taking the OS market by storm, it is now installed on over 15 million desktops. Although Linux is distributed with the source code, few administrators or programmers have a full understanding of its inner-workings. As companies begin to rely on Linux for solutions, administrators and programmers will look for a source of valuable, in-depth information. Providing in-depth coverage of the source-code internals of Linux, this book gives a high-level explanation of how this operating system works and the knowledge needed to program and run it optimally. Performance and Tuning issues are discussed, measured and explained with crisis-avoiding strategies for busy servers explained in detail. Variations of different Linux versions are explained and the accompanying CD-ROM includes code from the book and sample kernel enhancements. This book is written by an expert active in the development of Kha0S, a secure version of Linux.