Consider a demand-paging system will follow the time - measured utilization:
CPU utilization 20%
Paging disk 97.7%
Other I/O devices 5%
For each of the following, can you tell me whether it will improve CPU utilization?
Install a fast CPU
Install a bigger paging disk
Increase the degree of multiprogramming
Decrease the degree of multiprogramming
Install more main memory
Install a faster hard disk, or multiple controllers with multiple hard disk
Add prepaging to the page fetch algorithms
Increase the page size
(But I'm not sure what's meant by 97.7% paging disk utilization. If the system runs out of pagefile space, it'll stop allocating memory, which would cause apps to shut down.)
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