What is meant by the term affinity in processor sheduling, Operating System

Assignment Help:

Question:

(a) Answer the following questions based on the code snippet below.

1. int main (int argc, char *argv[])
2. {
3.
4. pid_t processId;
5.
6. processId = fork ();
7.
8.
9. if (processId == 0) {
10. if (execl ("/usr/bin/ls", "ls", 0) == -1) {
11. perror ("execl failed ");
12. exit (1);
13. }
14. exit (0);
15.
16. } else { // processId greater than 0 case
17. wait (0);
18. exit (0);
19. }
20. return 0;
21. }

(i) Explain what happens after line 6 is executed.

(ii) Who (parent or child) executes code between lines 10-14?

(iii) Explain what is happening at line 10.

(iv) What is happening at line 17?

(b) Discuss why we have different processor modes and how these modes are used in typical operating systems.

(iii) (c) (i) What is meant by the term ‘affinity' in processor sheduling?

(ii) Discuss briefly the major issues that need to be addressed in designing multiprocessor operating systems.

Discuss any two of the following multiprocessor scheduling strategies

  • Smart Scheduling
  • Gang Scheduling 
  • Space Sharing

Related Discussions:- What is meant by the term affinity in processor sheduling

What are conditions under which a deadlock situation arise, What are condit...

What are conditions under which a deadlock situation may arise? A deadlock situation can arise if the following four conditions hold simultaneously in a system: a. Mutual ex

Compute how many disk input - output operations are required, Q. Consider ...

Q. Consider a file at present consisting of 100 blocks. Presume that the file control block (and the index block in the case of indexed allocation) is already in memory. Compute h

Illustrate the handshaking protocol, Q. The instance of handshaking used 2...

Q. The instance of handshaking used 2 bits: a busy bit as well as a command-ready bit. Is it probable to implement this handshaking with only 1 bit? If it is illustrate the protoc

What are the advantages and disadvantages of multithreading, What are the a...

What are the advantages and disadvantages of multithreading?  Advantages : Since by multithreading multiple executions are carried out in the same process environment t

What do you understand by active directory domain, Question: a) What ...

Question: a) What do you understand by Active directory domain in Windows Server 2008? Support your answer with a diagram. b) Distinguish between active directory trees

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

Explain the concept of reentrancy, Concept of Reentrancy   It is a ...

Concept of Reentrancy   It is a useful, memory-saving method for multiprogrammed timesharing machines. A Reentrant method is one in which multiple clients can share a singl

Linux os, Introduction of linux

Introduction of linux

What is a resource-allocation graph, What is a resource-allocation graph? ...

What is a resource-allocation graph? Deadlocks can be explained more precisely in terms of a directed graph called a system resource allocation graph. This graph having of a se

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