Main Memory Management
The main part of the operating System is main memory. Main Memory is large array of words. It is a
large storage from where CPU & I/O devices share the data and access it. CPU read the instruction one
by one from the main memory and made operation each word in a main memory has its own address.
Main memory is a large storage device that the CPU is able to address and access directly.
For example :- For the CPU to process data from disk, those data must be transferred to main memory
by I/O calls.
Selection of a memory management scheme for a specific system depends on many factor. Mostly it
depends on hardware design of a system.
O/s is responsible for different memory mgmt.
Activities :-
(1) Keep the track of the memory parts when are currently used and by who.
(2) Decide which process is to be loaded in memory.
(3) When the main memory space is available
(4) Allocate & De Allocate the memory space.
The main part of the operating System is main memory. Main Memory is large array of words. It is a
large storage from where CPU & I/O devices share the data and access it. CPU read the instruction one
by one from the main memory and made operation each word in a main memory has its own address.
Main memory is a large storage device that the CPU is able to address and access directly.
For example :- For the CPU to process data from disk, those data must be transferred to main memory
by I/O calls.
Selection of a memory management scheme for a specific system depends on many factor. Mostly it
depends on hardware design of a system.
O/s is responsible for different memory mgmt.
Activities :-
(1) Keep the track of the memory parts when are currently used and by who.
(2) Decide which process is to be loaded in memory.
(3) When the main memory space is available
(4) Allocate & De Allocate the memory space.
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