Paging: Introduction

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Space management problem can be solved in two approaches:

Segmentation - chop into variable-sized pieces .

drawback : when space is divided into different sized chunks, the space itself gets fragmented, and thus allocation becomes challenging over time.

Paging - chop up space into fixed-sized pieces .

Instead of diving space into code, heap, stack, we divide space into fixed sized units we call a page.

View the physical memory as array of fixed size slots called page frames. Each frame contains one virtual memory page.

Advantages of Paging :

Flexibility - with a fully-developed paging