many criteria have been suggested for completion of CPU scheduling algorithms
1> CPU utilization's;
CPU utilization's means how many time CPU is busy. Conceptually utilization's can range 0-100%, but in real its range is 4-90%.
2> Throughput;
If the CPU is busy executing processes, then work is been done. The no. of processes that are completed per time unit is called Throughput.
3> Turn around time;
The interval from time of submission of a process to the time of completion is the turn around time.
It is the sum of period spend in waiting to get memory, waiting in the ready queue executing on CPU and do I/O operations.
4> Waiting time;
waiting time is the sum of period spend in the ready queue.
5> Response time;
It is the time b/w the time of submission of a request untill first response is produced.