Paging Behavior & Performance (OS micro deck 3)

Question 1

demand paging

Answer 1

pages of data are brought into memory only when they are needed.

Question 2

page swap

Answer 2

the process of moving pages between physical memory and disk storage to manage space in memory

Question 3

thrashing

Answer 3

Degradation of system performance from excessive paging operations.

Question 4

An event that occurs when a program tries to access a page that is not currently loaded in physical memory. When this happens, the operating system pauses the program, loads the needed page from disk into RAM, and then resumes execution.

Answer 4

page fault

Question 5

The process of moving pages (or sometimes entire processes, depending on the OS) between physical memory and secondary storage (usually a disk) to free up RAM. ______ occurs when memory is needed for another process or page.

Answer 5

swapping

Question 6

A condition where the operating system is running low on available physical memory, causing it to work harder to keep active pages in RAM. As ______ ______ increases, the OS must evict pages more frequently, which can lead to increased paging activity and slower performance

Answer 6

Memory pressure