1. Calculate the overall speedup of a system that spends 65% of its time in calculations with a processor upgrade that provides for 125% greater throughput. 2. Suppose your company has decided that it needs to make certain busy servers faster to achieve an overall system speedup of 35%. Processes in the workload spend 65% of their time using the CPU and 45% on I/O: How much faster does the CPU need to be? How much faster does the disk need to be?
Added by Ashley G.
Step 1
The overall speedup of a system can be calculated using Amdahl's Law, which states that the maximum improvement to an overall system is limited by the fraction of the time the improved section is used. In this case, the system spends 65% of its time in Show more…
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Without consulting the IT staff first, company management has purchased a new set of hard disks that it hopes will provide significant speedup of company servers. Specifically, the disks will provide 5 times the performance of the current disks (i.e., 400% faster). Management’s hope is that the new overall system performance will be at least 2.3 times the current system performance (i.e., 130% faster overall). What is the maximum amount of time (in %) that the system could spend doing disk I/O and still provide the desired overall system speedup of 130%? please show all work
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