sivunvaihto
Sivunvaihto, also known as page replacement or paging, is a critical concept in computer science, particularly in the field of operating systems and memory management. It refers to the process of removing a page from physical memory (RAM) and replacing it with a different page from secondary storage (such as a hard drive or SSD) when the system needs to load a new page into memory. This process is essential for managing the limited amount of physical memory available in a computer system.
The primary goal of sivunvaihto is to optimize the use of physical memory by ensuring that the
There are several algorithms used for sivunvaihto, each with its own advantages and trade-offs. Some of the
1. First-In-First-Out (FIFO): This algorithm replaces the oldest page in memory with the new page. It is
2. Least Recently Used (LRU): This algorithm replaces the page that has not been used for the
3. Clock: This algorithm is a variation of LRU that uses a circular list and a reference
4. Second-Chance: This algorithm is similar to the Clock algorithm but gives a second chance to pages
The choice of sivunvaihto algorithm can have a significant impact on system performance, and the selection