What is the system cache and paging?

[Black_Hand]

What is the system cache and paging?

The system cache is liable for the system performance of one’s computer. The cache works as a buffer between one’s computer's processor and the memory that serves it. The existence of the cache lets the processor to do its work while waiting significantly less for available memory than it otherwise would.

Virtual memory is a method used to trick the operating system into thinking it possesses more RAM for use by its applications than is actually present in the computer. The file used to imitate RAM is called the page file (also known as ‘swap file’). The computer uses the page file in connection with physical RAM to run the operating system and store information and programs. One cannot see the page file on his operating system by default.

Upon a successful Windows XP installation, the operating system creates a page file on the root folder of the drive that holds all of the system files. Windows XP determines the minimal page file size by multiplying the physical RAM on a particular system by one and half. This number is increased to three in the case of maximum page file size.

If one is interested in seeing the actual file, he may open Windows Explorer and then choose Tools | Folder Options. Next, select the View tab and select the Show Hidden Files & Folders option button and deselect the Hide Protected Operating System Files option. One can then use Windows Explorer to view his page file, which is located at the root of his hard drive. To the current configuration, one should click the Change button located in the Virtual Memory section.

In most cases, applying ‘System Managed size’ is considered sufficient. Picking this setting lets Windows XP to automatically manage the size of the page file.