Role of The Page Table
In operating systems that use virtual memory, every process is given the impression that it is working with large, contiguous sections of memory. In reality, each process' memory may be dispersed across different areas of physical memory, or may have been paged out to a backup storage (typically the hard disk). When a process requests access to its memory, it is the responsibility of the operating system to map the virtual address provided by the process to the physical address where that memory is stored. The page table is where the operating system stores its mappings of virtual addresses to physical addresses. Each mapping is also known as a Page Table Entry (PTE).
Read more about this topic: Page Table
Famous quotes containing the words role of, role, page and/or table:
“To win by strategy is no less the role of a general than to win by arms.”
—Julius Caesar [Gaius Julius Caesar] (100–44 B.C.)
“Women’s battle for financial equality has barely been joined, much less won. Society still traditionally assigns to woman the role of money-handler rather than money-maker, and our assigned specialty is far more likely to be home economics than financial economics.”
—Paula Nelson (b. 1945)
“So will my page be colored that I write?
Being me, it will not be white.
But it will be
a part of you, instructor.
You are white—
yet a part of me, as I am a part of you.”
—Langston Hughes (1902–1967)
“The gingham dog and the calico cat
Side by side on the table sat;”
—Eugene Field (1850–1895)