blocks|key|628767|text|大多数新的CPU倍增器可以很容易地降低(英特尔:+Speedstep，AMD:+PowerNow!)。这是用来省电的。使用RMclock，您可以手动调整倍增器，从而降低频率并降低pc速度。我自己使用这个工具，所以我可以告诉你它是有效的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|628768|http://cpu.rightmark.org/products/rmclock.shtml|offset|length|628769|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1B|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Most new CPUs multiplier can easily be lowered (Intel: Speedstep, AMD: PowerNow!). This is used to save power. With RMclock you can manually adjust your multiplier and thus lower your frequency and make your pc slower. I use this tool myself so I can tell you that it works.

<a href="http://cpu.rightmark.org/products/rmclock.shtml" rel="noreferrer">http://cpu.rightmark.org/products/rmclock.shtml</a>

blocks|key|2134190|text|虚拟机Bochs(发音为方框)允许您设置instructions+per+second指令。它可能是目前最慢的仿真器……|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2134191|entityMap^0|K|N|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

The virtual machine Bochs(pronounced boxes) allows you to set a <code>instructions per second</code> directive. It's probably the slowest emulator out there as it is though...

blocks|key|725181|text|创建一些虚拟机。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|725182|你可以使用VirtualPC或VirtualBox，两者都是免费的。|offset|length|725183|entityMap|0|LINK|mutability|MUTABLE|url|http://www.microsoft.com/windows/virtual-pc/|1|http://www.virtualbox.org/^0|0|5|9|0|F|A|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]|$D|U|E|V|1|W]]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]|N|$5|I|J|K|A|$L|O]]]]

Create some virtual machines.

You can use <a href="http://www.microsoft.com/windows/virtual-pc/" rel="nofollow noreferrer">VirtualPC</a> or <a href="http://www.virtualbox.org/" rel="nofollow noreferrer">VirtualBox</a> both are free.

blocks|key|628751|text|我建议在后台启动一些东西，这会消耗掉你所有的处理器周期。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|628752|一种寻找原数或类似数字的程序。|628753|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I would recommend to start something on the background which eats up all your processor cycles.

A program which finds primenumbers or something similar.

blocks|key|628830|text|降低CPU时钟并不总是能得到预期的结果。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|628831|较新的CPU具有架构改进功能，这使得它们在同等时钟基础上比较旧的芯片更有效率。顺便说一句，正因为如此，虚拟机也是测试“旧”技术性能的一种坏方法。|628832|你最好的选择就是简单地买几台旧的机器。使用相似的RAM+(类型和容量)、处理器、主板芯片组、硬盘和显卡。所有这些都会影响机器本身的整体性能。|628833|我之所以使用其他组件，是因为仅更改其中一个组件就会对浏览器性能产生影响。最好的例子就是内存。如果您的客户端仅限于512MB的RAM，则机器可能会为VM交换执行大量硬盘访问，即使只是运行浏览器也是如此。在这种情况下，即使在其他条件相同的情况下，降低处理器上的时钟速度，同时仍然保留2+2GB的RAM+(假设)，仍然不会有任何相同的性能。|628834|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Lowering the CPU clock doesn't always give expected results. 

Newer CPUs feature architecture improvements which make them more efficient on an equvialent clock basis than older chips. Incidentally, because of this virtual machines are a bad way of testing performance for "older" tech as well.

Your best bet is to simply buy a couple of older machines. Using similar RAM (types and amounts), processor, motherboard chipsets, hard drives, and video cards. All of which feed into the total performance of the machine itself.

I bring the other components up because changing just one of them can have an impact on even browser performance. A prime example is memory. If your clients are constrained to something like 512MB of RAM, the machines could be performing a lot of hard drive access for VM swaps, even for just running the browser. In this situation downgrading the clock speed on your processor while still retaining your 2GB (assuming) of RAM would still not perform anywhere near the same even if everything else was equal.

blocks|key|1929348|text|can可以工作，但可能有点挑剔，因为现代第三方编程语言将尝试尽可能地限制Isak+Savo's负载。当我对其进行测试时，很难(尽管有些测试是可能的)始终获得我想要的cpu使用类型。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1929349|然后我想起了http://www.cpukiller.com/，它已经做到了这一点。强烈推荐。顺便说一句，我发现这个工具是在现代机器上玩90年代的老游戏时发现的，当时帧速率与cpu时钟时间挂钩，使得在现代计算机上玩它们太快了。非常有用。|1929350|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/2514697/1607218|1|http://www.cpukiller.com/^0|10|B|0|0|6|P|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

<a href="https://stackoverflow.com/a/2514697/1607218">Isak Savo's</a>answer works, but can be a bit finicky, as the modern tpl is going to try and limit cpu load as much as possible. When I tested it out, It was hard (though possible with some testing) to consistently get the types of cpu usages I wanted.

Then I remembered, <a href="http://www.cpukiller.com/" rel="nofollow noreferrer">http://www.cpukiller.com/</a>, which does this already. Highly recommended. As an aside, I found this util from playing old 90s games on modern machines, back when frame rate was pegged to cpu clock time, making playing them on modern computers way too fast. Great utility.

blocks|key|2134172|text|高性能和低性能CPU之间的另一个重大区别是可用核心的数量。这实际上可以相差4倍，远远超过你可能遇到的时钟频率的差别。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2134173|您可以通过设置线程亲和性来解决此问题。为了显示google.com，即使是IE6也会使用13个线程。这意味着它将受益于多核CPU。但是，如果您只将线程亲和性设置为一个核心，那么所有13个IE线程都必须共享这个核心。|2134174|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Another big difference between high-performance and low-performance CPUs is the number of cores available. This can realistically differ by a factor of 4, way more than the difference in clock frequency you're likely to encounter.

You can solve this by setting the thread affinity. Even IE6 will use 13 threads just to show google.com. That means it will benefit from a multi-core CPU. But if you set the thread affinity to one core only, all 13 IE threads will have to share that one core.

blocks|key|2134266|text|除了上面的那些之外，另一个轻微的选择是在较低的资源配置中启动windows。转到开始菜单，选择运行，然后键入MSCONFIG。您可以转到引导选项卡，单击高级选项并限制处理器的内存和数量。它不像上面那样健壮，但它确实为您提供了另一种选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2134267|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Another slight option in addition to those above is to boot windows in a lower resource config. Go to the start menu,, select run and type MSCONFIG. You can go to the boot tab, click on advanced options and limit the memory and number of of processsors. It's not as robust as the above, but it does give you another option.

blocks|key|725437|text|我知道这个问题已经是老生常谈了，但这里有一些我个人使用的收据(不仅仅是用于Web开发)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|725438|725439|BES.在使用它时，我得到了一些奇怪的结果。|ordered-list-item|offset|length|725440|转到控制面板\所有控制面板项目\电源选项\编辑计划设置\更改高级电源设置，然后转到“处理器”部分，将其最大状态设置为5%25+(或其他值)。只有当您的处理器支持动态乘数更改并且正确安装了ACPI驱动程序时，它才能起作用。|725441|运行任务管理器，并为浏览器的(或任何其他)进程将处理器关联设置为单核心(或所需的任意核心数量)。这不是浏览器的最佳实践，因为JavaScript实现通常是单线程的，但据我所知，现代浏览器确实使用了多核。|725442|725443|entityMap|0|LINK|mutability|MUTABLE|url|http://mion.faireal.net/BES/^0|0|0|0|3|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|W|8|@]|9|@$F|X|G|Y|1|Z]]|A|$]]|$1|H|3|I|5|E|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I understand that this question is pretty old, but here are some receipts I personally use (not only for Web development):

<ol>
<li><a href="http://mion.faireal.net/BES/" rel="nofollow">BES</a>. I'm getting some weird results while using it.</li>
<li>Go to Control Panel\All Control Panel Items\Power Options\Edit Plan Settings\Change Advanced Power Settings, then go to the "Processor" section and set it's maximum state to 5% (or something else). It works only if your processor supports dynamic multiplier change and ACPI driver is installed correctly.</li>
<li>Run Task Manager and set processor affinity to a single core (or whatever number of cores you want) for your browser's (or any other's) process. Not a best practice for browsers, because JavaScript implementations are usually single-threaded, but, as far as I see, modern browsers actually DO use multiple cores.</li>
</ol>

We have some users which are using lower-CPU powered machines and they're encountering slow response times using our web application. Is there any way for me to do testing so that I can simulate lower CPU rates? 

For example, I have 2.3 Ghz computing power, can I lower it to 1.6 Ghz or lower so that I may be able to test it?

BTW, our customers are using Windows. I have to simulate low computing power on Internet Explorer as browser.

How To Simulate Lower CPU Processor Machines For Browser Testing

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我们有一些用户正在使用CPU功率较低的机器，他们在使用我们的web应用程序时遇到了响应速度较慢的问题。有没有什么方法可以让我做测试，这样我就可以模拟更低的CPU速率？例如，我有2.3 Ghz的计算能力，我可以将其降低到1.6 Ghz或更低，以便能够进行测试吗？顺便说一句，我们的客户正在使用Windows。我必须在Internet Explorer上模拟低计算能力作为浏览器。

问如何模拟低CPU处理器机器进行浏览器测试
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