What is virtual memory?
memory a large role in the computer, the computer will need all running programs to execute through memory, or if you perform a lot of great programs, it will lead to memory exhausted. In order to solve this problem, Windows uses virtual memory technology, which takes out part of the hard disk space to act as memory. This part of the space is called virtual memory. The virtual memory exists on the hard disk in the form of PAGEFILE.SYS.
virtual memory only supplement the lack of real memory, so do not be deified, one of only a few very real memory performance read and write performance of virtual memory (ie hard disk read and write), but also a large hard disk injury ! If you can use it, you can use it less! The principle is enough to use + to leave a small amount of allowance. Mistakes
one
virtual memory settings: Virtual Memory should not be located in the system tray C drive (system disk to another disk the same way), but should be located in other non-system partition.
Answer: False! 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? Is the head positioning! The positioning of the head in the same partition is undoubtedly more time-saving than the long-distance positioning across the partition! Therefore, the virtual memory (system default) in the system disk is the fastest and most efficient.
Second: The best value of the virtual memory is the memory capacity of 1.5-3 times.
Answer: False! 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.
general 512MB of memory, according to the actual use of memory footprint, you can set virtual memory to 256-768MB (RAM + virtual memory of, and generally higher than normal occupancy can be 256MB).
1GB memory, according to the actual memory usage may be set virtual memory 128-1024MB (memory + virtual memory and generally higher than normal occupancy can be 256-512MB). 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).
2G of memory and above, generally can disable virtual memory (with software limits can be set up 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.
Third: virtual memory the better.
Answer: False. The virtual memory is too large, which wastes disk space, increases the time for head positioning, and reduces system execution efficiency without any benefit. Set up correctly can save about 256MB-4G space (depending on memory size)
virtual memory optimization Generally first disable virtual memory can restart the computer into Safe Mode (Do not run a large number of programs ), and then defragmentation, reset virtual memory after completion, so that the page file does not contain fragmentation, read and write faster.
virtual memory settings
to Win7, for example, computer right, properties, advanced system settings, performance> Settings ..., Advanced, Virtual Memory> Change ..., automatic management canceled, custom Size, set, OK, exit reboot.