Transcription of Process Management - pearsoncmg.com
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Process Management - pearsoncmg.com
CHAPTER 4 Process Introduction to Process ManagementAprocessis a program in execution. A Process must have system resources, suchas memory and the underlyingCPU. The kernel supports the illusion of concur-rent execution of multiple processes by scheduling system resources among the setof processes that are ready to execute. On a multiprocessor, multiple processesmay really execute concurrently. This chapter describes the composition of a pro-cess, the method that the system uses to switch between processes, and thescheduling policy that it uses to promote sharing of theCPU.
82 Chapter 4 Process Management The system also needs a scheduling policy to deal with problems that arise from not having enough main memory to hold the execution contexts of all pro-
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