Difference between Internal and External Fragmentation
A partition of main memory is wasted within a partition is said to be Internal Fragmentation.
A partition of main memory is wasted of an entire partition is said to be External Fragmentation.
Internal Fragmentation vs External Fragmentation:
|1. The difference between the required memory for a program and the memory assigned for it that is called internal fragmentation.||1.The unused space that arises among non-contagious storage or fragments is called external fragmentation.|
|2.Internal fragmentation occurs when a fixed size memory allocation technique is used.||2. External fragmentation occurs when a dynamic memory allocation technique is used.|
|3. It refers to the space that remains unused between the blocks in an allocated region.||3. It refers to the space that remains unused because it is too short to store a request.|
|4. Internal fragmentation can be prevented by having partitions of several sizes and assigning a program based on the best fit.||4. External fragmentation can be prevented by methods such as paging and segmentation.|