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

Major page fault, Major page fault: If the page is not loaded in memory a...

Major page fault: If the page is not loaded in memory at the time the fault is stated, then it is named major or hard page fault. The handler in the machine requires to search a

Define programming fundamentals for client- server developer, Define the Pr...

Define the Programming Fundamentals for Client- Server Developers Coding for client - server enforces good programming fundamentals. In order for applications to become client

What is independent process, What is independent process? A process is ...

What is independent process? A process is independent it cannot influence or be affected by the other processes implementing in the system. Any process does not share data with

Demand paging, Demand paging gives that pages could only be brought into ...

Demand paging gives that pages could only be brought into memory if the running process acts them. This is usually referred to as lazy evaluation as only those pages operated by

What is a real-time system?, What is a Real-time system? A Real-time sy...

What is a Real-time system? A Real-time system is used when inflexible time requirements have placed on the operation of processor or the flow of data so it is often used as a

Define file permission in unix, The permission function is used to calculat...

The permission function is used to calculate what, if any access each class or level of user has to each file on a Unix machine. The permission task is one of the data components s

What is the translation lookaside buffer, What is the Translation Lookaside...

What is the Translation Lookaside Buffer (TLB) In a cached system, the base addresses of the last few referenced pages is maintained in registers known as the TLB that aids in

What is preallocation, What is preallocation? Why do it? Allocating spa...

What is preallocation? Why do it? Allocating space for a file before making the file to allow for expansion. This reserves space for a certain file so that other files can't gr

Linux os, Introduction of linux

Introduction of linux

Explain about deadlock detection, Explain about deadlock detection? In ...

Explain about deadlock detection? In deadlock situation, the system must provide An algorithm that verifies the state of the system to verify whether a deadlock has occu

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