Contiguous Memory Allocation :
Contiguous memory allocation is basically a method in which a single contiguous section/part of memory is allocated to a process or file needing it. Because of this all the available memory space resides at the same place together, which means that the freely/unused available memory partitions are not distributed in a random fashion here and there across the whole memory space.
The main memory is a combination of two main portions- one for the operating system and other for the user program. We can implement/achieve contiguous memory allocation by dividing the memory partitions into fixed size partitions.
Non-Contiguous Memory Allocation :
Non-Contiguous memory allocation is basically a method on the contrary to contiguous allocation method, allocates the memory space present in different locations to the process as per it’s requirements. As all the available memory space is in a distributed pattern so the freely available memory space is also scattered here and there.
This technique of memory allocation helps to reduce the wastage of memory, which eventually gives rise to Internal and external fragmentation.
The main memory is a combination of two main portions- one for the operating system and other for the user program. We can implement/achieve contiguous memory allocation by dividing the memory partitions into fixed size partitions.
2. Non-Contiguous Memory Allocation :
Non-Contiguous memory allocation is basically a method on the contrary to contiguous allocation method, allocates the memory space present in different locations to the process as per it’s requirements. As all the available memory space is in a distributed pattern so the freely available memory space is also scattered here and there.
This technique of memory allocation helps to reduce the wastage of memory, which eventually gives rise to Internal and external fragmentation.
