Paging

• Paging

Paging is a memory-management scheme that permits the physical address space of a process to be non-contiguous.
Eliminates problems with fragmentation by allocating memory in equal sized blocks known as pages.

The basic idea behind paging is to divide physical memory into a number of equal sized blocks called frames,
and to divide a programs logical memory space into blocks of the same size called pages
Any page ( from any process ) can be placed into any available frame.
The page table is used to look up what frame a particular page is stored in at the moment

http://www.cs.uic.edu/~jbell/CourseNotes/OperatingSystems/8_MainMemory.html

• Paging

http://www.youtube.com/watch?v=-Ypa8Uwf5YA&feature=related

paging provides shared memory among multiple  userspace processes