Understanding the Linux Kernel - Softcover

Bovet, Daniel

Softcover

ISBN 10: 0596000022 ISBN 13: 9780596000028

Publisher: O′Reilly, 2000

Synopsis

Why is Linux so efficient? Is it the right operating system for a particular application? What can be learned from looking at the kernel source code? These are the kinds of questions that Understanding the Linux Kernel takes in stride in this guided tour of the code that forms the core of all Linux operating systems.Linux is presented too often as a casual hacker experiment. It has increasingly become not only a mission-critical part of many organizations, but a sophisticated display of programming skill. It incorporates many advanced operating system concepts and has proven itself extremely robust and efficient for a wide range of uses.Understanding the Linux Kernel helps readers understand how Linux performs best and how it meets the challenge of different environments. The authors introduce each topic by explaining its importance, and show how kernel operations relate to the utilities that are familiar to Unix programmers and users.Major topics include:

• Memory management, including file buffering, process swapping, and Direct Memory Access (DMA)
• The Virtual File System and the Second Extended File System
• Process creation and scheduling
• Signals, interrupts, and the essential interfaces to device drivers
• Timing
• Synchronization in the kernel
• Inter-Process Communication (IPC)
• Program execution

About this title

Product Description

The book is brand new and will be dispatched from UK.

Review

Understanding The Linux Kernel is intended to be read by those happy to check points off against the source code. The first thing you learn is how, released from commercial constraints, Linux is able to take advantage of the best ideas from other systems implemented in wonderfully flexible ways. A good example is the Virtual File System. VFS has made it easy to add support for file systems from almost every other operating system. It is fascinating to find out how such features are implemented. Then there are loadable modules, I/O, scheduling, multitasking, multiprocessing, interrupts, spin locks, semaphores and all the other goodies involved in making a kernel work.

The authors are primarily concerned with the Linux 2.2 kernel. They discuss how Linus Torvald's decisions on kernel issues translate into architecture, for example, how the Linux' memory management uses a Slab Allocator on top of a Buddy System for greater efficiency. Similarly, at the cost of a little complexity the decision to use three-level memory paging when two work fine on 32-bit systems makes it possible to port to 64-bit processors without changes. The trade-offs between complexity and efficiency are discussed for most kernel features and each chapter finishes with related new features in kernel 2.4.

Despite the lucid and knowledgeable writing, you will come up against some brain-stretching complexity. Nevertheless, this is an important addition to the Linux canon. --Steve Patient

Edition details

• Publisher: O′Reilly
• Publication date: 2000
• ISBN 10: 0596000022
• ISBN 13: 9780596000028
• Binding: Paperback
• Language: English
• Number of pages: 704