📅 最后修改于: 2020-12-15 03:52:39 🧑 作者: Mango
| Sr No. | Paging | Segmentation |
|---|---|---|
| 1 | Non-Contiguous memory allocation | Non-contiguous memory allocation |
| 2 | Paging divides program into fixed size pages. | Segmentation divides program into variable size segments. |
| 3 | OS is responsible | Compiler is responsible. |
| 4 | Paging is faster than segmentation | Segmentation is slower than paging |
| 5 | Paging is closer to Operating System | Segmentation is closer to User |
| 6 | It suffers from internal fragmentation | It suffers from external fragmentation |
| 7 | There is no external fragmentation | There is no external fragmentation |
| 8 | Logical address is divided into page number and page offset | Logical address is divided into segment number and segment offset |
| 9 | Page table is used to maintain the page information. | Segment Table maintains the segment information |
| 10 | Page table entry has the frame number and some flag bits to represent details about pages. | Segment table entry has the base address of the segment and some protection bits for the segments. |