I saw on one site that “if all applications in the system freed unused memory, only after filling it, the intensive use of the paging file would make a job simply impossible.”.
Here is a list of questions:
- What is the swap file?
- why do you need?
- where applies?
- Why did it “make a job just impossible”?
- what would affect what it would “make a job just impossible”? Job application?
Answer 1, Authority 100%
What is the paging file?
This is a way to extend the computer’s RAM.
Why do you need?
applications love to use the RAM, but at the same time, although they “capture” it often these applications may not be active at the moment. In this memory may not be enough to other applications. Therefore, the operating system can pretend that she has, for example, 2 times more RAM than in fact. At the same time, it loads the memory of applications into RAM RAM if this memory is needed currently active applications, or vice versa unloads memory applications from RAM to disk if these applications are currently not very active.
Where applies?
Almost all operating systems use the paging file.
Why did it “make a job just impossible”?
Because the operating system would only make that loaded / unloaded data to a disk from RAM, and the disk, as is known, works for orders more slowly than RAM.
What would affect what it would “make a job just impossible”? Job application?
to work all applications, everything that spins on this computer as a whole. Applications will work very slowly, will slowly respond even on keystrokes, etc.
Answer 2
Switch file is needed on computers with a small number of RAM, and complements it. Although his speed of friction is less than normal RAM, applications will not simply close from the lack of operational.
last two points I did not understand.