Cpu scheduling algorithms - Study guides, Class notes & Summaries

TEST BANK for Operating System Concepts, 10th Edition ISBN: 978-1-119-32091-3 by Abraham Silberschatz, Greg Gagne and Peter B. Galvin. All Chapters 1-17 Updated A+ All Chapters 1-17 (Complete Download). TABLE OF CONTENTS CHAP TER 1: Introduction 1.1 What Operating Systems Do 1.2 Computer-System Organization 1.3 Computer-System Architecture 1.4 Operating-System Operations 1.5 Resource Management 1.6 Security and Protection 1.7 Virtualization 1.8 Distributed Systems 1.9 Kernel Data Structures 1.10...

TEST BANK for Operating System Concepts, 10th Edition ISBN: 978-1-119-32091-3 by Abraham Silberschatz, Greg Gagne and Peter B. Galvin. All Chapters 1-17 (Complete Download). TABLE OF CONTENTS CHAP TER 1: Introduction 1.1 What Operating Systems Do 1.2 Computer-System Organization 1.3 Computer-System Architecture 1.4 Operating-System Operations 1.5 Resource Management 1.6 Security and Protection 1.7 Virtualization 1.8 Distributed Systems 1.9 Kernel Data Structures 1.10 Computing Environments 1.11 ...

Chapter 4 - The Abstraction: The Process / Processes Process / Job - A running program. The abstraction provided by the OS of a running program. Virtualizing - The process of running a virtual instance of a computer system in a layer abstracted from the actual hardware. Time Sharing (CPU) - By running one process, then stopping it and running another, and so forth, the OS can promote the illusion that many virtual CPUs exist when in fact there is only one physical CPU (or a few). ...

First-Come, First-Served Scheduling correct answers Processes are executed in order received. Convoy Effect - problem where long processes make shorter, potentially more important processes, wait. Shortest Job First Scheduling correct answers Schedule processes/jobs with shortest burst time first. Priority Scheduling correct answers Assign every process a priority Starvation is a risk - low priority processes may never execute. Use aging - increase priority of a process over time...

COP4600 Final Combined What pieces of hardware are in the CPU? - ANS Registers, ALU, and control unit Hardware which serves as the CPUs memory. There are special and general purposed of these - ANS Registers Hardware which does arithmetic and logical computations - ANS ALU Hardware which tracks state/status. Also controls other components - ANS Control unit Instruction cycle responsible for loading the instruction - ANS Fetch Instruction cycle responsible for ...

537 First Half Exam Review A proportional share / fair share scheduler: instead of optimizing for ___________________________, the scheduler might instead try to guarantee that ________________________________________. - ANS-turnaround or response time, each job obtains a certain percentage of CPU time Lottery scheduling is ______________, not _______________________ - ANSprobabilistic, not deterministic High level outline of lottery scheduling? - ANS-- scheduler knows how many total t...

UF COP4600 - Exam 1 Algorithm - ANS set of instructions with finite initial store and state, a starting point, and unambiguous ordering until the endpoint Process (general definition) - ANS a program in execution = program + state Program - ANS sequence of instructions that embody an algorithm Job - ANS a task to be completed Why need an O.S.? - ANS - load program onto computer - access and supervise I/O devices - manage resources - protect private info - ...

Preemption correct answers Ability of the OS to interrupt a currently executing task and allocate the CPU to another task. Non-preemption correct answers Once a task starts executing, it continues until it completes or voluntarily gives up the CPU. Dispatcher correct answers The kernel routine that gives control of a core to the thread selected by the scheduler 1. Switches context from one process to another 2. Switches to user mode 3. Jumps to the proper location in the user progr...

Artificial Intelligence -->The ability of computers to solve problems and perform tasks that were once thought to be uniquely human. Browser -->-Software that allows users to find and read encoded documents in a form suitable for display -Software used to "Surf the Web", A program that allows the user to find and view pages on the world wide web. Categories of Computers -->Ordered from least to most powerful: -Microcomputers -Minicomputers -Mainframe computers -Supercomputers ...

UTA INSY 2303 EXAM 3 REVIEW ALREADY PASSED Critical Path The sequence of stages determining the minimum time needed for an operation especially when analyzed on a computer for a large organization Colocation Center Centers that dedicate information systems which several corporations lease space and equipment Data Center a specialized facility designed to hold and protect computer systems and data Application Development Tool Software that assists in the creation of new software ERP Enterpris...