Difference Between Pagination and Segmentation

Main difference

Paging is a process performed by the computer itself. Segmentation can only be done in the event that a programmer provides inputs to the system. The process of obtaining a large linear address space for which no additional physical memory needs to be purchased is known as Paging. In contrast, segmentation is a process that offers the ability to divide programs and data into logically sovereign address spaces. There is also the ability to share and protect segmentation. The search procedure cannot distinguish and protect process and data individually. With the help of segmentation, you can get the functionality to distinguish and protect processes and data separately. The paging process requires a 6-bit page value to select an appropriate entry in the process’s page table. A 16-bit physical address is formed in paging. Rather, the segmentation process must have a 4-bit segment of a logical address necessary for the basic purpose of selecting the appropriate entry in the process segment table.

What is pagination?

After critically examining the workings of your computer’s memory, you will find that it is divided into small partitions that are all the same size known as page frames. As soon as a course of action loads, it looks for pages similar in size to previous frames. After that, these process pages are loaded into the frames. This entire course of action is known as pagination. It is a memory management system in computer operating systems. The main purpose of paging is to store the data with the main goal of retrieving it when needed. Since the paging process is handled by the system by design, it is transparent to programmers.What is segmentation?

Computer memory allocation is done in various sizes which are commonly called segments. The size of the segment depends on the address space requirements of the process. These segments are limited separately or shared between processes. Segmentation is basically a computer process in which the main memory of the computer known as sections or segments is divided. These sections are commonly used in object files of compiled programs. If you work as a programmer, you should be aware of memory limits while working with pipelines.

Key differences

  1. The close range of memory addresses that is mapped to physical memory is known as a page. A self-contained address space is called a segment.
  2. Paging is a physical process, while segmentation is logical.
  3. The separate build process can never be done in pagination as long as the segmentation allows it separately.
  4. In paging, processes are not capable of sharing between users, but this feature is available in slicers.
  5. In the paging process, only a linear address space is used. Many address spaces are used in segmentation.

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