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This article mainly introduces what the running memory in the computer refers to, the introduction in the article is very detailed, has a certain reference value, interested friends must read it!

The running memory refers to the memory needed when the program is running; the size of the running memory directly determines how many programs the system can run. The larger the running memory, the faster the system runs the program. Running memory can be classified according to usage: available physical memory, free physical memory, cache physical memory, spare physical memory, modified physical memory, used physical memory, and so on.

Running memory, also known as main memory, refers to the memory needed when the program is running, which can only temporarily store data for exchanging cache data with CPU, generally referring to random access memory (Random Access Memory,RAM).

The size of the running memory directly determines how many programs the system can run. The larger the running memory, the faster the system runs the program. The development of memory is closely related to the degree of processor technology and system optimization. If the performance of the processor itself can not keep up, or the system optimization is not good, even equipped with more memory is a waste of resources.

When the computer is running, the main memory of the computer can be classified according to the usage as follows:

Available (Available) physical memory: memory that can be immediately allocated to programs. These include:

Free (Free) physical memory: completely unused, content is all 0

Cache (Cached) physical memory

Standby physical memory: the memory used by the operating system to load the hard disk data that may be used in advance has not been used by the user process, so it can be re-initialized to 0. 0 at any time.

Modified physical memory: memory that has been modified for caching use and can be written back to a hard disk file (not a paging file) at any time and reused. The modified (modified) physical memory cannot be counted as the free (Free) physical memory due to the hard drive I par O.

Used physical memory: memory that has been used by a process.

The physical memory used by the user process, the working set (Working set). Working Set contains memory that may be shared by other programs, such as DLL. So the total Working Set of all processes is likely to be larger than the actual physical memory used (used). Private Bytes is a virtual address space that is only committed (commit) by this process, excluding memory shared by other processes. Virtual Byte is the entire virtual address space occupied by the entire process. In 32-bit Windows user mode, processes can use up to 2GiB and can be extended to a maximum of 3GiB by modifying Boot.ini files. Memory Usage in task manager corresponds to working set, and VM Size corresponds to private bytes.

Physical memory used by core processes

Physical memory used by the core process of paging: physical memory that can be swapped into a paging file and thus reclaimed.

Physical memory used by core processes that are not paged (Non paged): memory that cannot be swapped into a paging file is always kept in physical memory

Hardware reserved (hardware reserved) physical memory: memory occupied by the GPU core or other peripheral hardware in the CPU and not used by the operating system.

The above is all the contents of the article "what does running memory in a computer refer to?" 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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