Round Robin Scheduling Program in C – Learn How To Implement Round Robin Scheduling Algorithm in C Programming Language. The RR Scheduling Algorithm is a Disk Scheduling Algorithm for tasks or processes that are needed to be executed. The Round Robin Algorithm is normally represented using Gantt’s Chart on paper.
The Round Robin Scheduling Program in C Language is normally implemented in Operating Systems to schedule multiple process entering the CPU for execution. This code is for Round Robin Non – Preemptive Algorithm in C Programming. Al those who are searching for Round Robin Scheduling Program in C. Process scheduling is an important component for process management. In a multi-user and a time-sharing system, response time is one of the most important objective to be accomplished. However, this tutorial will get you clear with understanding of Round Robin Scheduling program in C.
Round Robin Scheduling Algorithm
1. The queue structure in ready queue is of First In First Out (FIFO) type.
2. A fixed time is allotted to every process that arrives in the queue. This fixed time is known as time slice or time quantum.
3. The first process that arrives is selected and sent to the processor for execution. If it is not able to complete its execution within the time quantum provided, then an interrupt is generated using an automated timer.
4. The process is then stopped and is sent back at the end of the queue. However, the state is saved and context is thereby stored in memory. This helps the process to resume from the point where it was interrupted.
5. The scheduler selects another process from the ready queue and dispatches it to the processor for its execution. It is executed until the time Quantum does not exceed.
6. The same steps are repeated until all the process are finished.
The round robin algorithm is simple and the overhead in decision making is very low. It is the best scheduling algorithm for achieving better and evenly distributed response time.
Lets take one example to understand it.
Time Quantum = 2
|Process||Burst Time||Execution Time|
|Process||Arrival Time||Burst Time (x)||Turnaround Time(t)||Normalized Turnaround Time(t/x)||Waiting Time|
Average Turnaround Time = 15.25
Average Normalized Turnaround Time = 3.10
Average Waiting Time = 10