Disadvantages of address translation, Computer Engineering

Assignment Help:

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.

 


Related Discussions:- Disadvantages of address translation

What is pointers function, Visual basic applications have very rich and fle...

Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers

Stack operation and interrupts in microprocessor, Let us review the operati...

Let us review the operation of the stack within the 68HC11, the stack is a defined area of RAM which is last in first out register (LIFO) . Access to the stack is made via a stack

Give the solutions for critical section problem, Give the solutions for cri...

Give the solutions for critical section problem? A solution to the critical section problem must specify the subsequent requirements. (a) Mutual exclusion (b) Progress (c)

What do you mean by shared memory, Q. What do you mean by Shared Memory? ...

Q. What do you mean by Shared Memory? In shared memory scheme more focus is on controlling parallelism instead of data parallelism. In this model numerous processes run indepen

Device drivers in assembly, Device drivers are special programs installed b...

Device drivers are special programs installed by config.sys file to control installable devices.  So personal computers can be expanded at some future time by installation of new d

What are the types of parallel programming, Q. What are the types of parall...

Q. What are the types of parallel programming? There are various parallel programming models in general use. A few of them are:  Data Parallel programming Message P

What is verilog function, What is Verilog function - A function is una...

What is Verilog function - A function is unable to enable a task however functions can enable other functions. - A function would carry out its required duty in zero simula

What is combinational circuits, Q. What is Combinational circuits? Comb...

Q. What is Combinational circuits? Combinational circuits are interconnected circuits of gates according to definite rules to generate an output relying on its input value. A w

Difference between static and dynamic ram, Static RAM: No refreshing, 6 to ...

Static RAM: No refreshing, 6 to 8 MOS transistors are needed to form one memory cell, Information stored as voltage level in a flip flop. Dynamic RAM: Refreshed periodically, 3

Explain parallelism based on grain size in detail, Parallelism based on Gra...

Parallelism based on Grain size Grain size : Grain size/ Granularity are a measure that defines how much computation is involved in a process. Grain size is concluded by count

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd