This book is actually just one of a two volume set - "Solaris Internals" for developers, and "Solaris Performance and Tools" for system administrators. I will speak of the second edition of "Solaris Internals", since I am not a system administrator by trade. "Solaris Internals" is the badly needed update for the only book that I know of that contains information on how Solaris implements functions behind the application programming interfaces. This information will be most helpful to application developers, device driver and kernel module developers, and advanced system administrators that are responsible for performance tuning and capacity planning. The book reads like a combination computer architecture and operating systems manual, and though it can be a bit dry at times, it was meant to be a reference book that professionals can go to for the details. In that sense, the first edition never failed me. In fact, if you are not familiar with the concepts of computer architecture and operating systems theory in general, this book will probably be over your head. From perusing the second edition, the format seems to be very much the same in the second edition, just with expanded material reflecting the additional features of Solaris 10. Also, if you are into Solaris systems programming as I am, another essential volume is "Solaris Systems Programming". That book is also very dry reading, but it has what you need to know in order to write code with system calls to the Solaris operating system. I show the table of contents below:
Part One: Introduction to Solaris Internals
Chapter 1 -- Introduction
Part Two: The Process Model
Chapter 2 -- The Solaris Process Model
Chapter 3 -- Scheduling Classes and the Dispatcher
Chapter 4 -- Interprocess Communication
Chapter 5 -- Process Rights Management
Part Three: Resource Management
Chapter 6 -- Zones
Chapter 7 -- Projects, Tasks, and Resource Controls
Part Four: Memory
Chapter 8 -- Introduction to Solaris Memory
Chapter 9 -- Virtual Memory
Chapter 10 -- Physical Memory
Chapter 11 -- Kernel Memory
Chapter 12 -- Hardware Address Translation
Chapter 13 -- Working with Multiple Page Sizes in Solaris
Part Five: File Systems
Chapter 14 -- File System Framework
Chapter 15 -- The UFS File System
Part Six: Platform Specifics
Chapter 16 -- Support for NUMA and CMT Hardware
Chapter 17 -- Locking and Synchronization
Part Seven: Networking
Chapter 18 -- The Solaris Network Stack
Part Eight: Kernel Services
Chapter 19 -- Clocks and Timers
Chapter 20 -- Task Queues
Chapter 21 -- kmdb Implementation