How to properly set WINDOWS7 virtual memory

1, what is virtual memory?

Memory is very important in the computer, all the programs running in the computer need to go through the memory to execute, if the execution of the program is very large or many, will lead to memory consumption exhausted. To solve this problem, Windows uses virtual memory technology, that is, to take out a part of the hard disk space to act as memory, which is called virtual memory, the computer company Win7 system virtual existence on the hard disk is Pagefile.sys this page file.

Virtual memory is just a supplement of real memory, so do not be deified, the read-write performance of virtual memory (that is, the hard disk read and write) only a few one-tenth of real memory performance, but also a great damage to the hard disk! Can not be used, can be less use is less! principle is sufficient + leave a small amount of allowance.

2, virtual memory settings of the misunderstanding

First: Virtual memory should not be set on the system disk C disk (the system disk is the same as other disks), but should be located in other non-system partitions.

Answer: Wrong! Because C disk is the default system disk, the most frequently read and write system files and paging files. And what is the most time-consuming operation when the hard disk reads and writes? It's the head position! And the head positioning in the same partition is definitely more time-saving than the long-distance positioning of the distance across the partition. Therefore, the virtual memory (the system defaults) within the system disk is the fastest performing, win7 system download efficiency is the highest.

Second: The optimal value of virtual memory is 1.5-3 times times the memory capacity.

Answer: Wrong! To be judged on the basis of actual use. Especially the large memory popularity today. Memory usage See the Task Manager's memory column.

General 512MB memory, according to the actual use of memory footprint, you can set virtual memory for 256-768MB (memory + virtual memory and generally higher than the normal occupation of 256MB can).

1GB memory, according to the actual use of memory footprint, you can set virtual memory for 128-1024MB (memory + virtual memory and generally higher than the normal occupation of 256-512MB can). People who normally consume hundreds of MB (majority) can even disable virtual memory (with software restrictions that can set up a small amount of virtual memory, such as 16-128MB).

Memory is 2G and above, you can generally disable virtual memory (with software restrictions can set a small amount of virtual memory, such as 16-128MB). Some people who do use large amounts of memory, such as playing large 3D games, making big pictures, 3D modeling, and receiving low memory warnings, need to set virtual memory as appropriate.

Third: The larger the virtual memory the better.

Answer: wrong. The virtual memory is too large, which wastes the disk space, increases the time of the head positioning, and reduces the efficiency of the system execution. Correct settings to save 256mb-4g left and right space (depending on memory size)

3, the Virtual memory optimization

You can generally disable the virtual memory, restart the computer into Safe mode (then do not run a large number of programs), and then defragment, after the completion of the reset virtual memory, can make the page file does not contain fragments, read and write faster. (This digest is from http://www.windows7en.com/Win7/6127.html)

4, the virtual memory setting

Take WIN7 as an example, the Computer right button, properties, advanced system settings, Performance > Settings ..., Advanced, virtual memory > Changes ..., automatic management cancellation, custom size, settings, OK, exit reboot.