Two Level Page Table Size

238 bytes offset or displacement field in pa.

Two level page table size.

2 level page tables physical address pa. For a process is using 1gib address space find out size of 1 level page table and 2 levels page table when page table directory has got 1024 entries. Of pages of the page table 2 outer page table 2 22 2 12 2 10 pages. The page table is a key component of virtual address.

If so we could repeat this process by paging the top level page table thus introducing another. Thus here our outer page table page table 2 can be stored in one frame. Thus we can stop here. 212 bytes 4kb page frame number field in pa.

38 12 26 bits number of physical pages. 32 bit virtual address 4kib per page 4b size of page table entrie 1 gib size of address space. So size of outer page table 2 10 4b 4kb. A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses virtual addresses are used by the program executed by the accessing process while physical addresses are used by the hardware or more specifically by the ram subsystem.

38 bits physical address space. This fits in one page so there is no reason to split it further. But if still the size of page table is more than. 238 212 226 pa.

It asks to compute the memory space needed for a two level page table. The entries of the level 1 page table are pointers to a level 2 page table and entries of the level 2 page tables are pointers to a level 3 page table and so on. 12 bits page size. Prerequisite paging multilevel paging is a paging scheme which consist of two or more levels of page tables in a hierarchical manner.

Thus the total size of the top level page table is 2 10 entries 2 2 bytes per entry 2 12 bytes 4kb. This is two level paging because here we got 2 page tables. From the page size i found out that the offset is 12bits from the 32 of the memory address and that every page has 1024 entries.