There is one caveat: turning on the optimization means that the build time increases. The compiler attempts to do clever things, such as following loops and pulling out constants.

但有一个警告：启用优化意味着要增加编译时间——编译器尝试去做一些智能的事情，例如追随循环并分析出常量。

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With each higher level of optimization, compile time and systems resources used to compiler the source code increase as the additional amount of performance squeezed out decreases.

随着优化级别的提高，编译源代码所用的编译时间和系统资源增加，而性能的提升幅度下降。

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In addition to simplifying the site optimization process, the API might also make it simpler for companies to conduct in-house testing, reducing both the cost and time of optimization.

除了简化网站优化过程外，这个API还简化了公司进行内部测试的过程，减少了优化所需的成本和时间。

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The big idea: putting sensors everywhere that communicate in a mesh network and allow real-time tracking and optimization of everything from traffic to the power grid to the water supply.

FORBES: Researcher Throws A Wrench In IBM And HP's Sensor Networks