Operating System

1. Segmentation
Name :Nazmul Hossain Mir
Id:163-15-8386
Section :”C”

2. Why Segmentation is required?

3. Programmer’s view of a program.

4. Logical view of Segmentation

5. Logical Address to Physical Address

6. Advantages
• No internal fragmentation
• Average Segment Size is larger than the actual page size.
• Less overhead
• It is easier to relocate segments than entire address space.
• The segment table is of lesser size as compare to the page table in paging.

7. Disadvantages
• It can have external fragmentation.
• It is difficult to allocate contiguous memory to variable sized partition.
• Costly memory management algorithms.