Chapter 7. The HP-UX Paging System

   

Classic UNIX featured a program swapping system. When the kernel needed to make room in-core memory for a process to run, it would select an inactive process or one of a lesser priority and move it from physical memory to a temporary storage location on disk. The program was then said to be swapped out. Before the process could run again, it would have to be swapped back into memory. This could tie up a large portion of the system's I/O bandwidth. Whole process swapping has been relegated to the history books: modern kernels utilize a demand paging system.



HP-UX 11i Internals
HP-UX 11i Internals
ISBN: 0130328618
EAN: 2147483647
Year: 2006
Pages: 167

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