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Server farms such as Google and Yahoo! provide enough compute capacity for the highest request rate of the day. Imagine that most of the time these servers operate at only 60% capacity. Assume further that the power does not scale linearly with the load; that is, when the servers are operating at 60% capacity, they consume 90% of maximum power. The servers could be turned off, but they would take too long to restart in response to more load.
A new system has been proposed that allows for a quick restart but requires 20% of the maximum power while in this "barely alive" state.
a. How much power savings would be achieved by turning off 60% of the servers?
b. How much power savings would be achieved by placing 60% of the servers in the "barely alive" state? 66 ~ Chapter One Fundamentals of Quantitative Design and Analysis
c. How much power savings would be achieved by reducing the voltage by 20% and frequency by 40%?
d. How much power savings would be achieved by placing 30% of the servers in the "barely alive" state and 30% off?
What is a reason why some would want to prevent trade barriers from being reduced? - Some want to prevent trader barriers from being reduced because they:
10. If Rd = 300 - 40 iff, given the information above, what is the market clearing federal funds rate? Assume that this is the target for the federal funds rate. Show all work. NOTE: To calculate the market clearing federal funds rate, you first need..
a. What are the short-run AVC and ATC functions? Hint: Costs are a function of the level of output produced so your functions should be in terms of Q. b. What is the short-run MC function?
An economy is facing inflationary gap shown in the accompanying diagram. To eliminate gap, should the central bank use expansionary or contractionary monetary policy?
Explain one harm associated with unexpected inflation that is not associated with expected inflation. Then explain one harm associated with both expected and unexpected inflation.
How does the demand curve faced by a purely monopolistic seller differ from that confronting a purely competitive firm? Why does it differ? Of what significant is the difference? Why is the pure monopolist demand curve typically not perfectly inelast..
Derive the market demand curves for each individual and the market demand curve for Privet Drive. Suppose the market supply for Harry Potter books in Privet Drive is given by Qs =5 + P. Find the equilibrium price and quantity. How much does each co..
How are gifts and grants handled in the balance of payments? What does it mean for a country to experience a capital inflow? Is this associated with a surplus or a deficit on the country's capital account?
The cost of digital cameras calls. What happens to the demand for memory card. What happens to the demand for digital cameras.
What are the market inefficiencies the price controls measures such as price ceilings and price floors create? Why do price ceilings and price floors lead to productive and allocative (marketing) inefficiency?
Producing 10,000 units of electric teapot requires $400,000 of prime costs, uses 1000 machine hours, and takes 1100 setup hours. The activity rates are $30 per machine hour and $110 per setup hour. What is the unit cost of an electric teapot?
If the price per visit is given to be $25, at what level of visits will the maximum profit position be?What are the profits at this level?
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