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

Assignment, i need the job to be done within 3 days

i need the job to be done within 3 days

Example of producer consumer - semaphore, Now let's implement bounded produ...

Now let's implement bounded producer-consumer with semaphores, a Coke machine which is initially empty: semaphore sem_mutex = 1 // binary semaphore for mutual exclusion, 1==unlo

Is disk scheduling except fcfs scheduling, Q. Is disk scheduling except FC...

Q. Is disk scheduling except FCFS scheduling useful in a single-user environment? describe your answer. Answer: In a single-user environment the I/O queue typically is empty.

#title.Kernal, Ask questiWhat is dispatcheron #Minimum 100 words accepted#

Ask questiWhat is dispatcheron #Minimum 100 words accepted#

Differences among user-level threads and kernel-level thread, Q. What are t...

Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other? Answer: (1) User-level threads are un

Why we need to use a while statement when using wait method, Q. The wait()...

Q. The wait() statement in every Java program examples was part of a while loop. Describe why you would always need to use a while statement when using wait() and why you would ne

Hi, is the operating system windows sometimes interupts

is the operating system windows sometimes interupts

Virtual memory, In modern operating systems, applications do not directly a...

In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a phys

Explain drawbacks of fixed partitioning, The drawbacks of fixed partitionin...

The drawbacks of fixed partitioning are: The number of partitions are précised at system generation time limits the number of active processes in the system. For the re

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