PPT Slide

Paging

• Page table for each process
  • frame location of each page of the process
  • program: logical address is a page number plus an offset (d) within the page
  • page table: physical address is a frame number plus an offset (d) within the frame
  • the processor should use the page table to do the translation
  • page tables can be big, stored in virtual storage

• Page table mechanisms
  • inverted page tables: one entry for each real page rather than virtual page
  • translation lookaside buffer: a page table cache
  • page fault, roll-in, roll-out, thrashing
  • direct and associative mapping

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