The goal of this book is to provide practical information on the issues operating systems must address in order to run on modern computer systems that employ cache memories and/or multiprocessors. At the time of this writing, a number of books describe UNIX system implementations, but none describes in detail how caches and multiprocessors should be managed. Many computer architecture books describe caches and multiprocessors from the hardware aspect, but none successfully deals with the operating system issues that these modern architectures present. This book is intended to fill these gaps by bridging computer architecture and operating systems.
Written with the operating developer in mind, this book explains the operation of caches and multiprocessors from the system programmers point of view. While targeted toward UNIX system programmers, the book has been written so that the information can be applied to any operating system, including all UNIX variations. This is accomplished by explaining the issues and solutions at a conceptual level and using the UNIX system services as examples of where the issues will be encountered. The solutions can then be applied to other operating systems in the corresponding situations.
This book is intended to assist the operating system developer in two ways. First, the reader will learn how existing operating systems must be adapted to run on modern architectures. This is accomplished by a detailed examination of the operation of these architectures from the operating system perspective and an explanation of what the operating system must do to manage them. Second, the reader will learn the trade-offs involved in the different approaches taken by modern architectures. This will give the operating system developer the background needed when involved in the design of new computer systems employing caches and multiprocessors.
The reader is assumed to be familiar with the UNIX system call interface and the high-level concepts of UNIX kernel internals. The reader should also be familiar with computer architecture and computer system organization as would be taught in an undergraduate-level computer science course.
This book is an extension of a course I developed for UNIX system professionals in the computer industry. The course has been taught during the past four years in the United States at USENIX conferences, and in Europe at the EurOpen and UKUUG conferences. The course is a one-day tutorial and as such is limited in the amount of material that can be covered. This book covers all the course material on cache memories and multiprocessors in greater detail and includes additional topics.
This book is suitable for use in an upper-division undergraduate-level course or at the graduate level. Each chapter concludes with a list of exercises. The questions were chosen so that they could be solved with the information provided in the chapter plus some additional thought, rather than simply parrot the
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