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

Determine the task of the pass ii in a two-pass assembler, Determine the ta...

Determine the task of the Pass II In a two-pass assembler Synthesize the target program is the task of the Pass II

Deadlocks, At the end of this lecture, and into the next lecture, we will d...

At the end of this lecture, and into the next lecture, we will discuss the last major type of logical error that can occurwhen programming with threads. A deadlock occurswhen two t

Describe the main architectural layers of windows xp, Q. Describe the three...

Q. Describe the three main architectural layers of Windows XP? Answer: (1) The HAL (Hardware Abstraction Layer) creates operating system portability by hiding hardware differ

What is the kernel, What is the kernel? A more common explanation is th...

What is the kernel? A more common explanation is that the OS is the one program running at all times on the computer  usually known as the kernel, with all else being applicati

Define server processing with queues, Define Server Processing with Queues ...

Define Server Processing with Queues The efficient server processing of client request is essential for optimized client- server applications. This process is greatly enhanced

How does a program execution take place in multiprogramming?, How does a pr...

How does a program execution take place in multiprogramming? While the processor is dealing with a number of programs, the sequence with which programs are implemented will de

Define entry section and exit section, Define entry section and exit sectio...

Define entry section and exit section. The critical section problem is to design a protocol that the processes can use to cooperate. Every process must request permission  to e

Explain lru page replacement in detail, LRU page replacement In least ...

LRU page replacement In least lately used page replacement algorithm we will replace that page that hasn't been used for the longest period of time. This is similar as an opti

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