How Do I Calculate Page Size in Os

If page size = p bytes.Entry size = e bytes.Virtual Address Space = S bytes.Then, overhead O = (S/p) X e + (p/2)

How is paging calculated?

1. Physical Address Space = Size of main memory.
2. Size of main memory = Total number of frames x Page size.
3. Frame size = Page size.
4. If number of frames in main memory = 2X, then number of bits in frame number = X bits.
5. If Page size = 2X Bytes, then number of bits in page offset = X bits.

Why is page size 4kB?

A 4 KB page size has been used for Virtual Memory since the sixties. In fact, today, the most common page size is still 4 KB. Choosing a page size is finding the middle ground between several factors. On the one hand, a smaller page will reduce fragmentation; thus saving memory space.