Q. Presume an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs. Additionally the system allows developers to create real-time threads. Is it essential to bind a real-time thread to an LWP? Elucidate.

Answer: Yes Timing is critical to real-time applications. If a thread is marked like real-time but is not bound to an LWP the thread may have to wait to be attached to an LWP previous to running. Regard as if a real-time thread is running (is attached to an LWP) in addition to then proceeds to block (i.e. must perform I/O has been pre-empted by a higher-priority real-time thread is waiting for a mutual exclusion lock etc.) While the real-time thread is blocked-up the LWP it was attached to has been assigned to another thread. While the real-time thread has been scheduled to run again it should first wait to be attached to an LWP. Through binding an LWP to a real time thread you are making sure the thread will be able to run with minimal delay once it is scheduled.

Posted Date: 7/27/2013 2:37:39 AM | Location : United States

Ask an Expert

Related Discussions:- Is it essential to bind a real-time thread to an lwp, Assignment Help, Ask Question on Is it essential to bind a real-time thread to an lwp, Get Answer, Expert's Help, Is it essential to bind a real-time thread to an lwp Discussions

Write discussion on Is it essential to bind a real-time thread to an lwp
Your posts are moderated

Write your message here..

Related Questions

How many page faults take place in lru replacement, Q. Consider the subseq... Q. Consider the subsequent page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6. How many page faults would take place for the following replace

Explain about deadlocks, Q. Explain about Deadlocks? Deadlocks for (... Q. Explain about Deadlocks? Deadlocks for (int i = 0; i // first find a thread that can finish for (int j = 0; j if (!finish[j]) { boolean temp = true; for

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 pure demand paging, What is a pure demand paging? When starti... What is a pure demand paging? When starting implementation of a process with no pages in memory, the operating system sets the instruction pointer to the first instruction of t

Linux operation system, wat are the commands used for creating the file hie... wat are the commands used for creating the file hierarchy

Server thread, Extend task 1 so that the requests are issued by the clients... Extend task 1 so that the requests are issued by the clients instead of the server. The server now do not use the "all_requests.dat" file. Instead every client thread reads from

What is the purpose of the virtual memory in windows xp, Question: a) T... Question: a) The following refers to optimization under Windows XP: i) Give five steps which could undertake to enhance overall system performance in a default Windows XP in

Define race condition, Define race condition. When various process acce... Define race condition. When various process access and manipulate similar data concurrently, then the outcome of the execution depends on certain order in which the access take

Open source software, Literature review Literature review

Explain the different multithreading models, Question 1: a) Briefly exp... Question 1: a) Briefly explain each of the following terms: (i) Distributed systems. (ii) Real time systems. (iii) Multiprocessor. b) What is the impo