Custom memory allocation, Operating System

Assignment Help:

Some people write custom memory allocators to meet their speci?c needs. Although this is not needed for most of the applications, it is also not uncommon. The goal, of course, is to replace the OS allocator in an optimized version that deals more ef?ciently with the most frequently used data structures of some given application. Ideally, we expect the new allocator to require reduced runtime, provide expanded functionality (sometimes) and run on reduced space (rarely). Examples of applications that use custom allocators are the Apache webserver, GCC, the STL and most database servers. Unfortunately, there are also some drawbacks regarding the use of custommemory allocators, such as the increased burden on programmers, as well as the fact that they seldom allow the use of standard memory debuggers.


Related Discussions:- Custom memory allocation

Explain lru approximation page replacement, LRU approximation page replacem...

LRU approximation page replacement In this we are able to use the reference bit associated with the page entry to choose a page to be removed. The various algorithms used for

Explain disk scheduling algorithms-shortest seek time first, SSTF (Shortest...

SSTF (Shortest Seek Time First) After a demand go to the closest request in the work queue regardless of direction Decrease total seek time compared to FCFS Disadv

Explain parsing, What is parsing Parsing is the procedure of analyzing ...

What is parsing Parsing is the procedure of analyzing a text, made of a sequence of tokens, to define its grammatical structure regarding to a given formal grammar. Parsing is

What are the three major purposes of an operating system, Q. What are the t...

Q. What are the three major purposes of an operating system? Answer: To offers an environment for a computer user to execute programs on computer hardware in a conveni

Determine scheduling policy for time-shared operating system, Determine a s...

Determine a scheduling policy that is most suitable for a time-shared operating system   Round-Robin is a scheduling policy that is most suitable for a time-shared operating s

Linux, write a linux command to display lines from 25 - 45 of directory "/e...

write a linux command to display lines from 25 - 45 of directory "/edc/password" write a linux command to display directory in /edc

Objectives and functions of an operating system, Question: a) What is ...

Question: a) What is an Input/Output module and what are the five categories their functions fall into? b) What is an Operating System? Briefly describe the two objectives

Under what circumstances do page faults occur, Under what circumstances do ...

Under what circumstances do page faults occur?  Describe the actions taken by the operating system when a page fault occurs. A page fault happens when an access to a page that

What is the main problem with the fcfs scheme, Question : a) Consider ...

Question : a) Consider table 1.0 below, assume the processes arrived in the order P 1 , P 2 , P 3 , P 4 at time shown and need the indicated burst time (both in milliseconds)

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