6) Luke notices his system response time is really slow. To improve performance, he decides to reduce the system's time slice (from 170 ms to 1 ms). Is this a good idea? Assume the time to switch from one process to another takes 1 ms. Justify your response 7) Assume that an individual process in some system spends about 60% of its time waiting for l/O operations to be completed. What percentage of time is the processor doing useful work (called processor utilization) if there are three processes loaded into memory? How many processes should we keep in memory if we want processor utilization to be at least 90%? (2 points) 8) Suppose my process is BLOCKED, waiting on a file that your process is using, and your process is BLOCKED, waiting on a file that I am using. What is this situation called, and how can it be resolved