Question

Difference between mft and mvt in operating system

Answer 1

1)MFT or fixed partitioning Scheme:

In fixed scheme, the OS will be divided into fixed sized blocks. It takes place at the time of installation.

At compile time, we can bind only addresses

Degree of multiprogramming is not flexible. This is because the number of blocks is fixed resulting in memory wastage due to fragmentation.

2)MVT OR variable partitioning Scheme:

In variable partitioning scheme there are no partitions at the beginning.

There is only the OS area and the rest of the available RAM.

The memory is allocated to the processes as they enter.

This method is more flexible as there is no internal fragmentation and there is no size limitation.

Compile time address binding is impossible because of external fragmentation.

Answer 2

MFT and MVT are different memory management techniques in operating systems.

 

MFT or fixed partitioning scheme

1. The OS is partitioned into fixed sized blocks at the time of installation. For example, there can be total 4 partitions and the size of each block can be 4KB. Then the processes which require 4KB or less memory will only get the memory.

2. It is possible to bind address at the time of compilation.

3. It is not flexible because the number of blocks cannot be changed.

4. There can be memory wastage due to fragmentation.

 

MVT or variable partitioning scheme

1. No partitioning is done at the beginning.

2. Memory is given to the processes as they come.

3. This method is more flexible.

4. Variable size of memory can be given as there is no size limitation.

5. There is no internal fragmentation. But there can be external fragmentation.

6. Compile time address binding cannot be done.