bikesgaq.blogg.se - Process scheduling program in c

There are unique device queues available for each I/O device.Ī new process is initially put in the Ready queue. Processes waiting for a device to become available are placed in Device Queues.Processes in the Ready state are placed in the Ready Queue.All processes, upon entering into the system, are stored in the Job Queue.Pre-emptive Scheduling: When the operating system decides to favour another process, pre-empting the currently executing process.

Non Pre-emptive Scheduling: When the currently executing process gives up the CPU voluntarily.

Scheduling fell into one of the two general categories: For achieving this, the scheduler must apply appropriate rules for swapping processes IN and OUT of CPU. The prime aim of the process scheduling system is to keep the CPU busy all the time and to deliver minimum response time for all programs. The act of determining which process is in the ready state, and should be moved to the running state is known as Process Scheduling.

Longest Remaining Time First Scheduling.