Priority scheduling can be either preemptive or nonpreemptive. When a process arrives at the ready queue, its priority is compared with the priority 18 of the currently running process.
A schedulingscheme is defined as a method used to share network resources fairly among users by determining the order of requests to be served and managing the queues of awaiting requests, while providing different service levels based on parameters like bandwidth, mean delays, and loss rates.
There are many different schedulingalgorithms. In this section, we introduce several of them. In packet-switched computer networks and other statistical multiplexing, the notion of a schedulingalgorithm is used as an alternative to first-come first-served queuing of data packets.
A Process Scheduler schedules different processes to be assigned to the CPU based on particular schedulingalgorithms. There are six popular process schedulingalgorithms which we are going to discuss in this chapter −
Independent of whether cooperative or preemptive scheduling is used, there exist many algorithms the scheduler may use to determine which job is to be scheduled next.
Schedulingalgorithms stipulate the rules for OS to assign CPU time to various processes. The aim is to optimize CPU utilization. We have discussed ten primary types of these algorithms, with examples.
A schedulingalgorithm is the algorithm which dictates how much CPU time is allocated to Processes and Threads. The goal of any schedulingalgorithm is to fulfill a number of criteria:
In particular, our course focuses on schedulingalgorithms for parallel, identical machines. For these problems, approximation algorithms and approximation schemes exist.
