Tasks of OS Operating System

Tasks of an OS Operating System

1. Process Management:-

The operating system manages many kinds of activities ranging from user programs to system programs. Each of these activities is encapsulated in a process. There are many processes can be running the same program. The five major activities of an operating system in regard to process management are

• Creation and deletion of user and system processes.
• Suspension and resumption of processes.
• A mechanism for process synchronization.
• A mechanism for process communication.
• A mechanism for deadlock handling.

2. Memory Management:-

• Keeping track of which parts of memory are currently being used and by whom.
• Deciding which processes (or parts thereof) and data to move into and out of memory.
• Allocating and deallocating memory space as needed.

3. Device Management:-

• The assembling-disassembling of I/O peripherals devices are managed by the OS.

4. Storage Management:-
The three major activities of an operating system in regard to secondary storage management are:

• Managing the free space available on the secondary-storage device.
• Allocation of storage space when new files have to be written.
• Scheduling the requests for memory access.