Disadvantages of address translation, Computer Engineering

Disadvantages of Address translation:

Disadvantages are following:

  • A program that is too large to be held in a part needs some special design, that called

overlay, which brings heavy weight on programmers. Having overlay, a process consists of various portions with each being mapped to the similar location of the partition, and at any time, only 1 portion may reside in the partition. When another part is referenced, the present part will be switched out.

  • A program can be much smaller than a part, thus space left in the partition is going wasted, which is referred to as internal fragmentation. As an improvement shown in above figure (b), unequal-size partitions can be configured in primary memory so that small programs will occupy small partitions and large programs are also likely to be able to fit into large partitions. Although this can solve the above problems with fixed 5 equal-sizes partitioning to some degree, the basic weakness still exists: The number of partitions are the maximum of the number of processes that could reside in primary memory at the same time. When mostly processes are small, the system would be able to accommodate more of them but fails to do so due to the restriction. More flexibility is required.

 

Posted Date: 10/13/2012 5:44:44 AM | Location : United States







Related Discussions:- Disadvantages of address translation, Assignment Help, Ask Question on Disadvantages of address translation, Get Answer, Expert's Help, Disadvantages of address translation Discussions

Write discussion on Disadvantages of address translation
Your posts are moderated
Related Questions

Explain the Structure of Virtual Enterprise. The effective enterprise can be a suitable structure to explore the emerging opportunities for creating value within the informatio



A computer communication technology that gives a way to interconnect multiple computer across short distance is LAN

The process of entering data into a ROM is called ? Ans. The process of entering data in ROM is termed as programming the ROM.


Explain The for loop The for loop is frequently used, usually where the loop will be traversed a fixed number of times. It is very flexible, and novice programmers should take

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

What are different normalization forms? 1NF: Eliminate Repeating Groups Make a separate table for every set of related attributes, and give each table a primary key. Each fie