Suppose as an operating system designer you must choose between using either a Many-to-One or One-to-One Multithreading model between user and kernel threads. Describe what factors you should consider before choosing one or the other.
Many to One Model
One to One Model
By this we can say that many -to-one thread is more efficient than one-to-one because in one-to-one only one task can be performed at a time which ultimately result in slow processing.
But in many-to-one the process can't be run in parallel and so that it can't use the entire multiprocessor system,but it can generate multiple threads to perform a single task.
Suppose as an operating system designer you must choose between using either a Many-to-One or One-to-One...
Consider an environment in which there is a one-to-one mapping between user-level threads and kernel-level threads that allows one or more threads within a process to issue blocking system calls while other threads continue to run. Explain why this model can make multi-threaded programs run faster than their single-threaded counterparts on a uniprocessor computer.
Post a 3- to 4-paragraph analysis on the operating system/programming language you chose, and its support for threading. Make sure to do the following: Summarize the threading support. Answer the following questions: Is the threading model based on kernel-level or user-level threads? What is the most significant advantage of the implementation? What is the most significant disadvantage of the implementation? Provide a scenario where this method of threading will provide the best solution and explain why.
In this assignment, you will implement a Memory Management System(MMS). Using C Programming Language..... MAKE SURE YOU USE C PROGRAMMING Your MMS will handle all requests of allocation of memory space by different users (one thread per user) …. HINT(You will use Pthreads and Semaphores). Your MMS will provide the user with an interface for making memory requests and also for freeing up memory that is no longer needed by the user. One of the jobs of your memory management...
The VAX/ VMS operating system makes use of four processor access modes to facili-tate the protection and sharing of system resources among processes. The access mode determines:• Instruction execution privileges: What instructions the processor may execute• Memory access privileges: Which locations in virtual memory the current instruc-tion may access The four modes are as follows:• Kernel: Executes the kernel of the VMS operating system, which includes memo-ry management, interrupt handling, and I/ O operations• Executive: Executes many of the operating...
Choose your own adventure games, movies and books are a not so popular sub section of entertainment media, where each story is written from a second-person point of view, with the reader assuming the role of the protagonist and making choices that determine the main character’s actions and the plot’s outcome. These actions are usually only a choice between two deciding factors where sometimes the stories advance to different paths or a path you were position you had previously been...
2. In many mechanical positioning systems there is flexibility between one part of the system and another. The figure below depicts such a situation, where a force u(t) is applied to the mass M, and another mass m is connected to it. The coupling between the objects is often modeled by a spring constant k with a damping coefficient b, although the actual situation is usually much more complicated than this. y(t) m M ut) no friction no friction a)...
There are many data models for DBMS. 1- Which one is the most popular model used in DBMS ? Why is this model better than the other models ? Give an example of an old DBMS that did not use this current popular model. 2- Suppose that you have a college that maintains data on Students, Courses, and Instructors. Use the model in question 1 to describe the connection between the data. You should draw a simple diagram to show...
Consider a one-dimensional tight binding model of electrons hopping between atoms. Let the distance between atoms be called a, and here let us label the atomic orbital on atom n as In) for n-1,..N (you may assume orthonormality of orbitals, i.e, (n|m) -8nm) Suppose there is an on-site energy є and a hopping matrix element-t. In other words, suppose 〈nlH1m)=ε for n-mand (IH1m)=-t for n-m±1. (b) How many different eigenstates are there in this system? Consider a one-dimensional tight binding...
Implement information system project What is e-learning? What is proof you have the individual difference matter in the computer training? Why do corporations are lights to a heavily on vender support.? Describe the delivery methods many vendors employee for providing? Describe the various roles could be found in a helpdesk function? What are the common security threats to systems? How can they be address? One of the most difficult aspects of using the single location of pros to installing is...
You are required to choose a company which currently using the Absorption Costing System in determining the product and selling price. Make the research on whether they are ready to implement a new costing system called Activity Based Costing (ABC). Your written report must include the followings: 1. Introduction / Background of the company. - Company profile, mission, vision, organizational chart, business core and etc. (5 marks) 2. i. The introduction to the Absorption Costing system. ii. Should provide...