What are the two differences between user-level and kernel-level threads? Under what circumstances is one type is better than other? Answer: 1- User-level threads are unknown by the kernel‚ whereas the kernel is aware of kernel threads. 2- On systems using either M: 1 or M: N mapping‚ user threads are scheduled by the thread library and the kernel schedules kernel threads. 3- Kernel threads need not be associated with a process whereas every user thread belongs to a process. Kernel threads are
Premium Scheduling
its lifetime. Operating system takes care of selecting the processes from these queues in some fashion. Selecting process is done by the the appropriate scheduler. Types of scheduling: Short - term (or) CPU Scheduler Medium – term Long – term (or) Job Scheduler Short – Term Scheduler: Short term scheduler selects the processes that are ready to execute and allocates CPU to one of them. Medium – Term Scheduler: Medium term scheduler is introduced by some operating systems such as time sharing
Premium Time Term
UNIX/Linux‚ Mac‚ Microsoft Windows Operating System Differences University of Phoenix Abstract This paper will elaborate on the major differences of the main Operating Systems (OS)‚ which are UNIX/Linux‚ Mac®‚ Microsoft® Windows®. The areas of discussion for this paper will be on Memory Management‚ Process Management‚ File Management‚ and Security for each operating system. Operating Systems (OS) for a computer is the main processing software
Premium Operating system File system
Types of Operating Systems Within the broad family of operating systems‚ there are generally four types‚ categorized based on the types of computers they control and the sort of applications they support. The categories are: * Real-time operating system (RTOS) - Real-time operating systems are used to control machinery‚ scientific instruments and industrial systems. An RTOS typically has very little user-interface capability‚ and no end-user utilities‚ since the system will be a "sealed box"
Premium Operating system Unix
employment in a bid to play a role in determining their own destinies. However‚ the process of undertaking the business venture is where the challenges and problems lie. There are a number of factors that could ultimately lead to the downfall of small businesses such as: the failure to draw a proper business plan‚ insufficient capital‚ entry of a new competitor‚ having a seasonal business; to mention a few. These factors can be grouped as internally generated; when caused by the entrepreneur himself‚ and
Premium Business Management Small business
POS 355 Week 5 Operating Systems Analysis Team Paper Introduction When considering which operating system for a home or business office computer or network of computers‚ it is important to evaluate all areas of the different operating systems options. When evaluating Microsoft Windows XP‚ Microsoft Windows Server 2008‚ and Linux operating systems it is important to consider the system requirements‚ the different editions available‚ security features‚ system features‚ updates and support‚
Premium Microsoft Windows Windows Vista
Considering all the environmental effects of producing and consuming petroleum products‚ should people continue to drive gasoline-powered vehicles? Why or why not? Why driving gasoline-powered vehicles is neither sustainable nor compulsory Human activities‚ such as driving petrol-powered cars‚ are the major driver of global warming. As a result increasing temperatures endanger our health as well the ecosystems and cause increasingly common impacts such as record high temperatures‚ rising seas
Premium Carbon dioxide Automobile Greenhouse gas
Market Share UNIX/Linux‚ Mac‚ and Windows collectively own 99.29% of the total desktop operating system market share (NetMarketShare‚ 2013). These operating systems run our home and work computers. Server versions of these operating systems run Internet web pages‚ corporate databases and file servers. Mobile versions of these operating systems run our personal smart phones and tablets. Soon‚ we may see a Linux-based ecosystem in vehicles. What is known as Automotive Grade Linux‚ a sub group of
Premium Operating system
Should America Switch to the Metric System? Out of all 195 countries in the world a mere 3 of them are currently using the US customary system of measurement as its official measurement system. These three remaining countries are the US‚ Liberia (which was founded by the US)‚ and Myanmar(which is drifting toward converting to the metric system) meaning that if the US were to switch to the metric system it would finally be on the same base as the other 99% of the world. America should swi
Premium United States Metric system Units of measurement
also likely have a relationship with their business community that allows them to survive on very little cash. Bootstrap financing does not work for all types of businesses due to the way it is carried out. There are a number of practices that can fall into the general category of bootstrap financing. One of these practices is operating with vendors through letters of credit‚ or IOUs‚ without actually providing cash. For example‚ if you want to provide a shipment of steel to a real estate developer
Premium Debt Bond Credit