What is virtual memory? What does it do?
The role of memory in the computer is very important. All running programs in the computer need to be executed through memory. If the program is executed, it will cause memory consumption. Exhausted. In order to solve this problem, Windows uses virtual memory technology to use part of the hard disk space as memory. Although the hard disk can't run faster than the memory, the capacity is much higher than the memory capacity. Its function is to transfer some data that is read into the memory but not used temporarily to the virtual memory, so that the memory space can be released, and the limited memory space can continue to store the unread data to alleviate the memory. tension.
Common Win7 virtual memory settings misunderstanding
1, virtual memory is not hard set in the system disk, you should specifically separate a blank partition dedicated to store page files, do not store any other files.
Wrong! Because the system disk contains system files and page files, it is the most frequently read and write partition of the hard disk. What is the most time-consuming operation of hard disk reading and writing? It is the head positioning! The head positioning in the same partition is undoubtedly It takes time to locate back and forth over a long distance across partitions! Therefore, virtual memory is set to be the fastest and most efficient in the system disk.
2, the best value of virtual memory: the minimum value is set to 1.5 times the physical memory, the maximum value is set to 3 times the physical memory.
Wrong! It depends on the actual use. Nowadays, as the price of memory becomes cheaper and cheaper, especially after the popularity of Win7 system, the required physical memory capacity has increased significantly. The traditional virtual memory setting method is no longer applicable!
General 512MB memory, According to the actual memory usage, you can set the virtual memory to 256-768MB (the sum of memory + virtual memory is generally 256MB higher than the normal occupancy).
1GB memory, according to the actual memory usage, you can set the virtual memory to 128-1024MB (the sum of memory + virtual memory is generally 256-512MB higher than the normal occupancy). Usually, people who normally occupy hundreds of megabytes (most of them) can even disable virtual memory (software-limited software can set a small amount of virtual memory, such as 16-128MB).
Memory is 2G and above, you can generally disable virtual memory (software limited to a small amount of virtual memory, such as 16-128MB). Some people who do use a lot of memory, such as playing large 3D games, making large pictures, 3D modeling, etc., and receiving the system memory shortage warning, need to set the virtual memory as appropriate.
3, the larger the virtual memory, the better.
Wrong! The virtual memory is too large, which wastes disk space and increases the time for head positioning, which reduces the system execution efficiency without any benefit. Correct setting can save about 256MB-4G space (depending on memory size)
How to set virtual memory?
Right-click property My computer, and then click [Advanced System Settings].
In the system property window, select the [Advanced] menu and click [Settings] in the [Performance] option.
Then click [Change] in the pop-up performance options window.
Select the drive (usually C drive), select [Custom Size] to manually modify the initial and maximum values of virtual memory.