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SSS 2009-03-09

时间:2010-05-17 06:21来源:互联网 提供网友:木渐浅。   字体: [ ]
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This is Scientific American's 60-Second Science. I'm Christie Nicholson. This will just take a minute.

 

Most of us know we save energy when we put our idle computers to sleep. But what about the servers that run data centers?

 

Every cell phone call, ATM request, Web search is routed through data centers. And the energy used is predicted to exceed 100 billion kilowatt1 hours by 2011, with an annual cost of $7.4 billion dollars, according to the Environmental Protection Agency. This is nearly double the energy centers used in 2006.

 

Servers are really inefficient2. They take in 60 percent of peak power, even when they do nothing.

Researchers at the University of Michigan, propose that servers be put to sleep when idle. They’re presenting the paper, "PowerNap: Eliminating Server Idle Power” this week in Washington D.C.

 

Servers would have to sleep and wake at a millisecond rate. While the hardware for fast sleeping computers exist, servers lack a person to close the lid. So it would require a redesign of the operating system to coordinate3 this instantaneous waking and sleeping.

 

Researchers say their plan will save nearly 75 percent of the energy taken up by these machines. If true, it’s probably worth the pain of renovation4.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Christie Nicholson.

 


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1 kilowatt r2Axv     
n.千瓦
参考例句:
  • They pay thirty fen per kilowatt hour.他们每度电付三角钱。
  • The watt is a small unit of power so that we use the kilowatt instead.瓦特是小功率的单位,因此我们用千瓦代之。
2 inefficient c76xm     
adj.效率低的,无效的
参考例句:
  • The inefficient operation cost the firm a lot of money.低效率的运作使该公司损失了许多钱。
  • Their communication systems are inefficient in the extreme.他们的通讯系统效率非常差。
3 coordinate oohzt     
adj.同等的,协调的;n.同等者;vt.协作,协调
参考例句:
  • You must coordinate what you said with what you did.你必须使你的言行一致。
  • Maybe we can coordinate the relation of them.或许我们可以调和他们之间的关系。
4 renovation xVAxF     
n.革新,整修
参考例句:
  • The cinema will reopen next week after the renovation.电影院修缮后,将于下星期开业。
  • The building has undergone major renovation.这座大楼已进行大整修。
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