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Memory Management

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Suppose you have a computer system with a $48-bit$ logical address, page size of $16KB$ and $4 bytes$ per page table entry. If we have a $48MB$ program such that the entire program and all necessary page tables are in memory. How much memory is used by program, including its page tables?
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No of pages = (process size) / (page size)

                     = (48 MB) / (16 KB)

                      = 3K

Page Table Size = (no of pages) * page table entry

                          = (3K) * (4B)

                          = 12 KB

Total memory used by the program = (process size) +  (page table size)

                                                         = (48 MB) + (12 KB)

                                                         = 49164 KB
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Total PHP MySQL Other RAM
Time (ms) % Time (ms) % File count Time (ms) % Query count Time (ms) % Amount %
Setup 4.1 5% 2.7 3% 72 1.7 2% 2 0.0 0% 569k 50%
Control 13.4 19% 1.8 2% 5 12.0 17% 12 0.0 0% 244k 21%
View 1.3 1% 1.3 1% 12 0.0 0% 0 0.0 0% 57k 5%
Theme 44.6 65% 3.9 5% 15 40.8 59% 3 0.0 0% 264k 23%
Stats 5.2 7% 0.1 0% 0 5.1 7% 1 0.0 0% 0k 0%
Total 68.6 100% 9.8 14% 104 59.6 86% 18 0.0 0% 1136k 100%