Unit-2: Process Management
OPERATING SYSTEM AND VIRTULIZATION
SUBJECT CODE: 3141601
B.E. 4TH Semester
Difference Program v/s Process
No.
Program
Process
1
A program is an organized set of
instruction that can perform
particular task.
A process is a program in execution.
2
A program contains set of
instruction and variables that tell
the computer what to do with the
variables.
One by one all instructions are read
from the program and specified
operations are performed.
3
A program has longer life span.
A process has limited life span.
4
A program is stored on disk.
A process contains various
resources like a main memory,
processors, printers, scanners, disk.
5
A program is a static/passive entity.
Once user writes a program, it will
remain as it is until user modifies it.
A process is dynamic/active entity.
It changes its states during its time
duration of execution. It takes birth
(process creation), lives (process
execution) and dies (termination).
6
A program requires memory space
on disk to store all instructions.
A process contains memory
address which is called address
space
