Differentiate between fixed and variable size positioning, operating system question
Differentiate between fixed and variable size positioning, operating system question
Fixed Partitioning : Multiprogramming with fixed partitioning is a contiguous memory management technique in which the main memory is divided into fixed sized partitions which can be of equal or unequal size.
Variable Partitioning : Multiprogramming with variable partitioning is a contiguous memory management technique in which the main memory is not divided into partitions and the process is allocated a chunk of free memory that is big enough for it to fit.
|
S.N O |
Fixed partitioning |
Variable partitioning |
|
1 |
In multiprogramming with fixed partitioning the main memory is divided into fixed sized partitions. |
In multiprogramming with variable partitioning the main memory is not divided into fixed sized partitions. |
|
2 |
Only one process can be placed in a partition. |
In variable partitioning, the process is allocated a chunk of free memory. |
|
3 |
It does not utilize the main memory effectively. |
It utilizes the main memory effectively. |
|
4 |
There is presence of internal fragmentation and external fragmentation. |
There is external fragmentation. |
|
5 |
Degree of multiprogramming is less. |
Degree of multiprogramming is higher. |
|
6 |
It is easier to implement. |
It is less easier to implement. |
|
7 |
There is a limitation on the size of the process. |
There is no limitation on size of process |
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