n processes are time-sharing the CPU. The average total CPU time is T. The time quantum is Q. The context switching overhead is S. Determine the fraction of CPU time wasted on context switching for...

n processes are time-sharing the CPU. The average total CPU time is T. The time quantum is Q. The context switching overhead is S. Determine the fraction of CPU time wasted on context switching for the following cases:

1. 
   

   T <>

   
   


2. 
   

   T >> Q

   
   


3. 
   

   Q approaches 0

   
   


4. 
   

   Under what condition will the wasted fraction of CPU time by 50%?