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the processes spend 70% of their time running in the CPU and 30% waiting for service from the disk.Suppose processor array upgrade is 50% faster than...

the processes spend 70% of their time running in the CPU and 30% waiting for service from the disk.Suppose processor array upgrade is 50% faster than what you have and costs $10000.Similary there is a set of disk drives for $7000 which promises two and a half times the throughout of your existing disks. Then in economical view whether processor or disk is to choose for your computer?

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