AN thread

It has a thread ID, a program counter, a register set, and a stack. Thread is smaller than a process so thread creation needs only some resources when with a process creation. In creating a process, it requires to allocate the process control block (PCB).The PCB includes a memory map and list of open files. A process creation makes memory being allocated for program instructions and data. 4.11) Concurrency: A condition that exists when at least two threads are in progress.

C) mutex lock is better if the thread is put to sleep while holding the lock because in case of spinlock the thread will always try locking a spinlock if it is not successful which will take lot of CPU time and resources where as in case of mutex lock , it will allow to sleep during which other thread can run. 6.2) Preemptive scheduling allows a process to be invoked/disturbed in the middle of its execution by taking

As we mentioned in the introduction section, one of the time problems related to the Tableau procedure is checking if the branch is closed or not. The ordinary way for checking if a branch is closed is known as highly time-cost process. We need an intelligent and simple way to construct and check the branches. One way, is to use ordered branches (i.e. to put the negated predicates in the branch first, and then not negated ones), but we still have a problem if the number of negated elements is much

process terminates, the init process becomes the new parent of the zombie. Periodically, the init process calls wait() which ultimately releases the pid and entry in the process table of the zombie process. 4.7 If a kernel thread suffers a page fault with multithreads, another thread can be swapped for it. if you have a single-threaded process, then it will not be capable of performing well when a page fault occurs. Therefore, in scenarios where a program might suffer from frequent page faults, a multi-threaded

How do they differ from those used when a process is created? Answer: Thread does not require new resources to execute. Creating a process requires allocating a process control block (PCB), a rather large data structure. The PCB includes a memory map, list of open files, and environment variables. Allocating and managing the memory map is typically the most time-consuming activity. Creating either a user or kernel thread involves allocating a small data structure to hold a register set, stack

Operations Management Fall 2013 Kristen’s Cookie Company September 26, 2013 Kristen and her roommate are preparing to launch Kristen’s Cookie Company in their on-campus apartment. The company will provide fresh cookies to hungry students late at night. Evaluation of the preliminary design for the company’s production process will be required in order to make key policy decisions, including what prices to charge, what equipment to order and how many orders to

SWE 622 Distributed Software Engineering (Fall 16) Reading Assignment 4 Team Members: Bobby Bounvichit G00544954 Damaruka Priya Ulla G00964073 Mukesh Kumar Sunder G00973428 Zain Usmani G00738248 1. Consider 5 processes that need to agree on their joint state. To protect against Byzantine failures, the processes adopted a protocol as described in the slides, in particular, each process broadcasts its own state to all others, assembles the state received from others, and then broadcasts

The Thread by Victoria Hislop is set in Thessaloniki, Greece. The novel tells the story of the multicultural yet racist city and how the face of the city has changed since the early twentieth century all the way up until today. As Dimitri Komninos is born, a devastating fire sweeps through the thriving Greek city where Christians, Jews and Muslims live side by side. As his father rebuilds their fabric empire first and eventually the showpiece home overlooking the sea, Dimitri and his mother live

converted to priority levels. Then we can control priorities by controlling the deadlines.”Although such an approach is error prone, nonetheless it is employed for lack of a better solution”(Buttazzo, 2005). 7.3 Predictable synchronization: The threads of the system need to communication and to be synchronized in a timely efficient and predictable way. 7.4 Sufficient Priority Levels: In the scheduling algorithms based on priorities. There must be enough levels of priorities. Priority inversion

The operating system (OS) has two view-points it provides services to: 1. User view 2. System view User view: From user point of view operating system should be convenient and easy to use and interact with. It should be better performance vice. Following are the two, some of important services provided by the operating system that are designed for easy to use computer system. a) Program Execution: The major purpose of the operating system is to allow the user to execute programs easily. The operating