What do you mean by tournament Class 12?

A tournament is a competition held among various teams in a particular activity according to a fixed schedule where a winner is decided. Fixture of 13 teams. Total teams =13. Total matches = N – 1 = 13 – 1 = 12 matches. Number of teams in upper half.

Nine types of tournaments or leagues are described in this book: single elimination, double elimination, multilevel, straight round robin, round robin double split, round robin triple split, round robin quadruple split, semi-round robins, and extended (such as ladder and pyramid tournaments).

Answer: As there is less time, manpower, modified facilities round robin is not preferred rather knock out tournament is preferred. Explanation: If the time and expenditure scheduled on the tournament is not enough and the participating teams are more also the officials taking care is not sufficient.

6 matches

seven games

Round–robin (RR) is one of the algorithms employed by process and network schedulers in computing. As the term is generally used, time slices (also known as time quanta) are assigned to each process in equal portions and in circular order, handling all processes without priority (also known as cyclic executive).

To determine the number of games for a single round robin tournament, as seen above, use the following formula, N x (N-1)/2. With a tournament of 6 teams, the calculation would be: 6 x (6-1)/2 = 6 x 5/2 = 30/2 = 15 games.

In Round Robin Scheduling, CPU is assigned to the process on the basis of FCFS for a fixed amount of time. This fixed amount of time is called as time quantum or time slice. After the time quantum expires, the running process is preempted and sent to the ready queue.

Round Robin is the preemptive process scheduling algorithm. Each process is provided a fix time to execute, it is called a quantum. Once a process is executed for a given time period, it is preempted and other process executes for a given time period. Context switching is used to save states of preempted processes.

Calculating Average Waiting Time

1. Hence, waiting time for P1 will be 0.
2. P1 requires 21 ms for completion, hence waiting time for P2 will be 21 ms.
3. Similarly, waiting time for process P3 will be execution time of P1 + execution time for P2, which will be (21 + 3) ms = 24 ms .

Turnaround time = Exit time – Arrival time After 2 seconds, the CPU will be given to P2 and P2 will execute its task. So, the turnaround time will be 2+5 = 7 seconds. Similarly, the turnaround time for P3 will be 17 seconds because the waiting time of P3 is 2+5 = 7 seconds and the burst time of P3 is 10 seconds.

If time quantum is too large, the response time of the processes is too much which may not be tolerated in interactive environment. If time quantum is too small, it causes unnecessarily frequent context switch leading to more overheads resulting in less throughput.

Round Robin is a CPU scheduling algorithm where each process is assigned a fixed time slot in a cyclic way. It is simple, easy to implement, and starvation–free as all processes get fair share of CPU. … It is preemptive as processes are assigned CPU only for a fixed slice of time at most.

fcfs first

Waiting time – How much time processes spend in the ready queue waiting their turn to get on the CPU. ( Load average – The average number of processes sitting in the ready queue waiting their turn to get into the CPU. Reported in 1-minute, 5-minute, and 15-minute averages by “uptime” and “who”. )

Long Term Scheduler It is also called a job scheduler. A long–term scheduler determines which programs are admitted to the system for processing. It selects processes from the queue and loads them into memory for execution. Process loads into the memory for CPU scheduling.

4 Answers. Throughput means total number of tasks executed per unit time. Shortest Job First has maximum throughput because in this scheduling technique shortest jobs are executed first hence maximum number of tasks are completed.

Shortest Job First (SJF) Scheduling Algorithm is based upon the burst time of the process….Note –

There is no universal “best” scheduling algorithm, and many operating systems use extended or combinations of the scheduling algorithms above. For example, Windows NT/XP/Vista uses a multilevel feedback queue, a combination of fixed-priority preemptive scheduling, round-robin, and first in, first out algorithms.

C-SCAN algorithm provides low variance in average waiting time and response time. Whereas SSTF provides high variance in average waiting time and response time.

C–LOOK disk scheduling algorithm : C–LOOK is the modified version of both LOOK and SCAN algorithms. In this algorithm, the head starts from first request in one direction and moves towards the last request at other end, serving all request in between.

C–LOOK is the modified version of both LOOK and C-scan algorithms. In this algorithm, the head starts from the first request in one direction and moves towards the last request at another end, serving all request in between.

Circular SCAN (C–SCAN) scheduling algorithm is a modified version of SCAN disk scheduling algorithm that deals with the inefficiency of SCAN algorithm by servicing the requests more uniformly. Like SCAN (Elevator Algorithm) C–SCAN moves the head from one end servicing all the requests to the other end.