【Vista之家编译】Windows 7从睡眠到唤醒只需2秒钟

Win7之家（ www.win7china.com）：【Vista之家编译】Windows 7从睡眠到唤醒只需2秒钟

 随着Windows系统的进步，微软也越来越强调睡眠功能的重要性了。睡眠后，用户可以在几秒钟之内唤醒系统，而关机再开机的话，恐怕时间就要长得多了，尤其是对于Vista这样的启动时间饱受批评的系统。因此，微软打算在Windows 7中大大缩短系统启动时间，有测试称这个时间只有15秒。

但是，在关机按钮选项上，微软还是将睡眠放在放在了关机的上面，休眠功能则被精简掉了。来自微软Windows内核团队的主管 Dean DeWhitt称：“在睡眠模式下，所有文档，打开的程序以及文件都将被保存在内存中。因为此时只有内存是需要供电的，此时的功率消耗相当少，对于一台笔记本而言，大概只有1W，对于台式机而言，也只有3W左右。而最大的好处在于，在Windows 7中，从睡眠到唤醒只需2秒钟。”

从下面的图表可以看出，睡眠和关机所耗费的电量差不了多少。但重新启动机器就不只是需要15秒的时间了，更多的是比唤醒多得多的电量。

另外，在笔记本中，Windows 7依然提供了休眠模式，在此模式下功耗几乎为0。

附部分原文：

As far as the Windows operating system goes, Microsoft advocates the use of Sleep rather than Shut Down, with two immediate consequences. The first is intimately related to power savings, while the second involves being able to bring the operating system back to life in under 2 seconds. Windows in general, and Windows Vista in particular, have constantly been criticized for high boot times. Microsoft has went head over heals to make the Windows 7 startup process faster than Vista's, and has not even been shy of delivering a boot drag race with the pre-Beta Milestone 3 build of the next iteration of the Windows client and its precursor, in order to showcase the advances delivered.

Still, when it comes down to power-off options, the company would choose Sleep over Shut Down without hesitation. In Sleep mode “All of the open programs, documents, and files are preserved in system RAM, and the rest of the system is powered off. Because only memory is powered, Sleep consumes a very small amount of power—typically less than 1W on a mobile PC, and typically less than 3W on a desktop PC. The primary benefit of Sleep is that resume is very fast—most systems resume from sleep in less than 2 seconds,” Dean DeWhitt, program manager in the Windows kernel team, explained.
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