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The Virtual Address Space of a Process, Block Device Caching, Paging Under Linux
SUBJECT : Computer Science
AUTHOR : KSOU
PUBLISHED ON : 30/09/13
NUMBER OF PAGES : ( 26 Pages)
PRICE : Rs 19.5

In this unit, we have discussed the abstract model of virtual memory and its mapping to physical memory. The physical and, virtual addressing modes are presented in detail. The paging mechanism under Linux system with demand paging is explored in-depth. The structure of Linux page tables at three levels is addressed. The concept of memory allocation and de-allocation using system calls is presented along with the structure of memory layout. The number of memory management caches used by Linux system is given. The concept of swap operation is discussed which helps in implementing virtual memory management issues.


 
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