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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?
a firms profit ?q is the difference between its revenue rq and costs cq..a what condition holds when the firm is
Look at the table Total Cost Data. What is the total variable cost for this bicycle firm when the firm produces 5 bicycles?
Suppose that the economy is already in a recession, and both President and Congress have decided to do something to restore the economy.
This is a post from Ben Bernanke's blog. The purpose of the post is to explain why interest rates are so low and the role that the Federal Reserve (the Fed) plays in determining the rates.
Imagine that you are the human resource manager of a small architectural firm. you learn that the monthly premiums for the company existing health insurance policy will rise by 15% next year.
For each of the following statements, identify the type of market it describes. Use an example from the readings or the internet for each characteristic and explain your choice.
The problem belongs to Economics and it is discusses about price elasticity of requirement for gasoline in France after the Arab oil crisis in 1973-74.
Using the perfectly competitive labor demand and labor supply model, what would happen, all else equal, to the real wage and the number of workers in each of the cases below: A. There is an increase in the amount of physical capital as a result of po..
Suppose the academy agrees explain how many athletes are required to eliminate the deficit.
At the end of 2002, the (1-year) interest rate was 1% in the U.S., and 26% in Argentina. Recall that at the same time, the spot rate for the Argentine currency was Peso 4.00/$.
Describe how Lewis should spend his $10 on Pepsi and Chicken Wings in order to maximize his total utility. How many Pepsi and Chicken Wings would Lewis buy?
Explain the law of diminishing marginal utility and Why are there so many more proprietorships than corporations, yet corporations account for so much more of the sales of business firms in the country?
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