Talking about virtual memory common sense and misunderstanding in Windows 7 era

Memory plays a big role in the computer. All running programs in the computer need to be executed through memory. If the program is large or many, the memory consumption will be exhausted. In order to solve this problem, WINDOWS uses virtual memory technology, that is, takes out a part of the hard disk space to act as memory. This part of the space is called virtual memory, and the virtual memory exists on the hard disk in the form of PAGEFILE.SYS.

Virtual memory is just a supplement to the lack of real memory, so don't deify it. The read and write performance of virtual memory (that is, hard disk read and write) is only a fraction of the real memory performance, and it is very harmful to the hard disk. ! If you can use it, you can use it less! The principle is enough to use + to leave a small amount of allowance.

Below, we look at a few common problems, and the user's misunderstanding, of course, this article is common to Windows7, Vista, XP and other systems.

Myth 1: Virtual memory should not be set in the system disk C (system disk is the same as other disks), but should be set in other non-system partitions.

Answer: Wrong! Because the C drive is the default system disk, the hard disk read and write most frequently is the system file and page file. 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 more time-saving than the long-distance positioning across the partition! So, the virtual memory in the system disk (system default Value) is the fastest and most efficient implementation.

Myth 2: The optimal value of virtual memory is 1.5-3 times the memory capacity.

Answer: Wrong! It should be judged according to the actual use. Especially the popularity of large memory today. Memory usage See the task manager's memory column.

Generally 512MB of 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, you can set 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.

Myth #3: The bigger the virtual memory, the better.

Answer: Wrong. The virtual memory is too large, which wastes disk space, increases the time for head positioning, and reduces system execution efficiency without any benefit. Correct setting can save space around 256MB-4G (depending on memory size).

Taking Windows7 as an example, computer right click, properties, advanced system settings, performance > settings..., advanced, virtual memory > change..., automatic management cancel, custom size, settings, OK , exit and restart, of course, Vista and other systems are the same.

Top: Set Windows7 virtual memory to quickly increase its read and write speed