Wednesday, 15 October 2014

What is Page File

The area of the hard disk that stores the RAM image is called a page file. It holds pages of RAM on the hard disk, and the operating system moves data back and forth between the page file and RAM. On a Windows machine, page files have a .SWP extension.

Pagefile.sys is a windows system files, acts as swap file and was designed to improve performance. Windows uses it as RAM in case the application you're running on your computer ends up needing more RAM than you actually have. Usually page file is 1.5 times than your actual physical memory size, it is the recommended minimum size. The maximum size is 3 times than your actual physical memory size. Pagefile.sys is a hidden file.

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