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This article mainly introduces the role of pagefile.sys, the article is very detailed, has a certain reference value, interested friends must read it!

Pagefile.sys is the "virtual memory swap file" of Windows. Its function is to use part of the hard disk space as memory, first store some data in the memory that has been idle for too long on the hard disk, and then call it out from the Pagefile.sys when it is used again.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

Q: when I use Windows XP, I find that there is a file called Pagefile.sys in the system directory. Its size often changes, reaching hundreds of megabytes when it is large. What kind of file is this?

A: don't worry, Pagefile.sys is actually a virtual memory swap file for Windows. Its function is to use part of the hard disk space as memory, first save some data in the memory that has been idle for too long to the hard disk, and then call it out from the Pagefile.sys when you want to use it again.

The files of the virtual memory set by the system on the hard disk cannot be deleted, but the size can be set. The system can automatically set the size of a virtual memory according to the size of your memory. By default, it is established under the system disk. If your virtual memory has a multi-gigabyte, I guess your memory should be 768 or 1g. You can set the size of your virtual memory like this. Right-click on my computer and select Properties. Select the advanced tab, click the settings below the performance, click the advanced tab, below there are virtual memory settings pull, virtual memory settings pull, the performance of the machine is improved. By default, virtual memory is enough to pull, no need to change, if you want to change it, I suggest you set each disk on virtual memory, and it is the same size as the system disk, on it!

Pagefile.sys is a system file (Win386.swp in Windows 98), and its size often changes by itself, from tens of megabytes when small to hundreds of megabytes when large, so there is no doubt that pagefile.sys is a virtual memory under Windows, its function is basically similar to physical memory, but it exists as a "backup force" of physical memory, that is to say, It works only when physical memory is no longer used enough. We all know that although the hard disk is not as fast as the memory, the memory is not comparable to the hard disk in terms of capacity. When running a program requires a lot of data and takes up a lot of memory, the memory will be "stuffed" and put the temporarily unused data on the hard disk, and the space occupied by the data is virtual memory.

In storage, the page file is the reserved file of the hard disk, and can be used as an extended RAM when the data in the RAM has not been used recently. Page files can be read from adjacent blocks on the hard disk, much faster than reading data again from many different source locations. The Windows NT administrator or user can reset the page file provided by the system.

The above is all the content of this article "what is the function of pagefile.sys?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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