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

Define busy waiting and spinlock, Define busy waiting and spinlock. Whe... Define busy waiting and spinlock. When a process is in its significant section, any other process that tries to enter its critical section must loop continuously in the entry c

Assignment, You must use fork and pipe to complete this project. This proj... You must use fork and pipe to complete this project. This project creates processes to add all numbers in a file. The user will enter a number (1, 2, or 4) of parallel processes

Explain acyclic-graph directories, Acyclic-graph directories An acyclic... Acyclic-graph directories An acyclic graph permits directories to have shared subdirectories and files. The similar file or subdirectory may be in two dissimilar directories. A

Explain the booting process for a windows xp system, Q. Explain the booting... Q. Explain the booting process for a Windows XP system? Answer: (1) Since the hardware powers on the BIOS begins executing From ROMand loads as well as executes the bootstrap

What are the use of job queue, What are the use of job queues, ready queues... What are the use of job queues, ready queues and device queues? As a process enters a system they are put in to a job queue. These queues having of all jobs in the system. The

Inventory differences, What makes a Just-in-Time inventory system differ fr... What makes a Just-in-Time inventory system differ from a traditional inventory system?

Multilevel page table, what is multilevel page table and its applications? what is multilevel page table and its applications?

Requirements for solution of critical section problem, What are the require... What are the requirements for solution of critical section problems? Mutual exclusion : If process p is implementing in its critical section then no other processes can be exe

Bio, how it is work. how it is work.

Macro, What is macro expansion What is macro expansion