HP-UX Internals introduces readers to the "under the hood" aspects of the HP-UX operating system. The book illustrates the kernel data structures and algorithms used to provide process/thread scheduling, I/O control and system resource management. Both hardware dependent and hardware independent data structures are examined and explained. The topics covered help readers approach system administration, tuning and troubleshooting from a more informed perspective, and challenge them to make more effective use of their HP-UX systems. The material is focused on the HP-UX 11i (version 1.0) release of the HP-UX operating system, but includes some historic aspects of its development to establish and understanding of its current incarnation.