blocks|key|4391994|text|使用apache's+benchmark+tool+ab。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4391995|来自Wikipedia:+ApacheBench|4391996|4391997|+ApacheBench是一个命令行计算机程序，用于测量HTTP+web服务器的性能，特别是Apache+HTTP服务器。它旨在提供给定Apache安装所能提供的性能的概念。特别是，它显示了服务器每秒能够处理的请求数。|blockquote|4391998|4391999|4392000|您可以向它提供已登录用户的cookie/值对，并将其指向搜索URL，并能够告诉它运行并发连接以模拟并发用户。|4392001|entityMap|0|LINK|mutability|MUTABLE|url|http://httpd.apache.org/docs/2.0/programs/ab.html|1|http://en.wikipedia.org/wiki/ApacheBench^0|Q|2|2|Q|0|0|2|M|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|6|7|15|8|@]|D|@$9|16|A|17|1|18]]|E|$]]|$1|H|3|-4|5|6|7|19|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|1A|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1D|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]|X|$5|S|T|U|E|$V|Y]]]]

Use <a href="http://httpd.apache.org/docs/2.0/programs/ab.html" rel="nofollow noreferrer">apache's benchmark tool <code>ab</code></a>.

From <a href="http://en.wikipedia.org/wiki/ApacheBench" rel="nofollow noreferrer">Wikipedia: ApacheBench</a>:

<blockquote>
 ApacheBench is a command line computer
 program for measuring the performance
 of HTTP web servers, in particular the
 Apache HTTP Server. It was designed to
 give an idea of the performance that a
 given Apache installation can provide.
 In particular, it shows how many
 requests per second the server is
 capable of serving.
</blockquote>

You can provide it with cookie/value pairs of a logged in user, and point it to the search URL, with the ability to tell it to run concurrent connections to simulate concurrent users.

blocks|key|1010508|text|java应用程序的研磨器：Grinder|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1010509|entityMap|0|LINK|mutability|MUTABLE|url|http://grinder.sourceforge.net/^0|D|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

the grinder for java apps : <a href="http://grinder.sourceforge.net/" rel="noreferrer">Grinder</a>

blocks|key|4392200|text|Apache+JMeter肯定会支持您的场景，并支持Distributed+Testing+(pdf)，这是一种在不同机器上运行多个代理的模式，因此可以扩展以模拟大量并发用户。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4392201|entityMap|0|LINK|mutability|MUTABLE|url|http://jakarta.apache.org/jmeter/|1|http://jakarta.apache.org/jmeter/usermanual/jmeter_distributed_testing_step_by_step.pdf^0|0|D|0|Q|J|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

<a href="http://jakarta.apache.org/jmeter/" rel="nofollow noreferrer">Apache JMeter</a> would definitely support your scenario and supports <a href="http://jakarta.apache.org/jmeter/usermanual/jmeter_distributed_testing_step_by_step.pdf" rel="nofollow noreferrer">Distributed Testing</a> (pdf) which is a mode where you run several agents on different machines and can thus scale to simulate high numbers of concurrent users.

blocks|key|4392223|text|你可以试试Web+Performance+Load+Tester+--它是一个中等价位的负载测试产品。它比SilkPerformer或LoadRunner便宜得多，效率也高得多。它仅限于web协议，但这听起来对您的应用程序来说不会是问题。网站上有一些视频，可以让你对这个工具有一个很好的感受：http://www.webperformanceinc.com/load_testing/demo/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4392224|(免责声明:我为Web性能而工作，几乎每天都在使用该产品)|4392225|entityMap|0|LINK|mutability|MUTABLE|url|http://www.webperformanceinc.com/load_testing/demo/^0|42|1F|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

You could try Web Performance Load Tester - it is a mid-priced load testing product. It is much less expensive than SilkPerformer or LoadRunner and much more productive. It is limited to only web protocols, but that doesn't sound like it will be a problem for your application. There are videos on the site that will give you a pretty good feel for the tool: <a href="http://www.webperformanceinc.com/load_testing/demo/" rel="nofollow noreferrer">http://www.webperformanceinc.com/load_testing/demo/</a>

(disclaimer: I work for Web Performance and use the product nearly every day)

blocks|key|1008473|text|还有httperf：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1008474|http://agiletesting.blogspot.com/2005/04/http-performance-testing-with-httperf.html|offset|length|1008475|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|2B|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]]]]

There's also httperf:

<a href="http://agiletesting.blogspot.com/2005/04/http-performance-testing-with-httperf.html" rel="nofollow noreferrer">http://agiletesting.blogspot.com/2005/04/http-performance-testing-with-httperf.html</a>

blocks|key|4392137|text|我建议你试试Microsoft+Web+Capacity+Analysis+Tool+(WCAT)。它能够同时在多台机器上运行，并且每个客户端都可以有多个“虚拟客户端”，因此它们能够模拟到web服务器的多个连接。它可以连接到任何web服务器(由一些Apache狂热分子使用)，但当然它与IIS集成得最好。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4392138|它由IIS性能小组开发，并由Microsoft用于对其IIS服务器进行压力测试。它有x86和x64两个版本，很容易创建自己的扩展。|4392139|它的工作方式如下:您可以创建一个场景文件，使用该文件可以描述任意数量的HTTP请求。(它有GET、POST选项，还支持HTTPS。)然后，您可以将这些请求分组到代表一系列请求的事务中，以模拟用户交互。每个虚拟客户端一次运行一个事务，它等待当前请求完成，然后再启动下一个请求。|4392140|很容易编写一个包含一系列请求的事务，这些请求可以模拟用户在事物上的“点击”。(也可以在两个请求之间“休眠”一段时间，从而模拟用户正在阅读页面。)|4392141|以下是官方介绍：|4392142|HTTP容量分析工具(WCAT)是一个轻量级的|4392143|负载生成工具，主要用于测量受控环境中Web服务器的性能。WCAT可以模拟数千个并发用户向单个网站或多个网站发出请求。WCAT引擎使用一个简单的脚本来定义要回放到web服务器的HTTP请求集。可扩展性是通过插件DLL和标准的简单API提供的。|blockquote|4392144|4392145|4392146|也许它唯一的缺点是一开始设置起来有点复杂。它是一个命令行工具，所以它也太容易搞砸参数了。|4392147|entityMap|0|LINK|mutability|MUTABLE|url|http://www.iis.net/community/default.aspx?tabid=34&i=1466&g=6^0|6|17|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|E|5|6|7|16|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|17|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|19|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1A|8|@]|9|@]|C|$]]|$1|N|3|O|5|P|7|1B|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1E|8|@]|9|@]|C|$]]|$1|U|3|-4|5|6|7|1F|8|@]|9|@]|C|$]]]|V|$W|$5|X|Y|Z|C|$10|11]]]]

I recommend you to try the <a href="http://www.iis.net/community/default.aspx?tabid=34&amp;i=1466&amp;g=6" rel="nofollow noreferrer">Microsoft Web Capacity Analysis Tool (WCAT)</a>. It is able to run on multiple machines simultaneously, and each of the clients can have multiple "virtual clients", thus they are able to simulate multiple connections to a web server. It can connect to any web server (used by some Apache fanatics), but of course it integrates best with IIS.

It was developed by the IIS performance team and is used by Microsoft to stress-test their IIS server. It has both x86 and x64 versions, and it is easy to create your own extensions to it.

It works the following way: you create a scenario file with which you can describe any number of HTTP requests. (It has options for GET, POST, and also has HTTPS support.) You can then group these requests to transactions which represent a series of requests to simulate user interaction. Each virtual client runs a single transaction at a time, and it waits until the current request completed before starting the next one. 
It is easy to write a transaction that contains a series of requests which can simulate users "clicking" on things. (It is also possible to "sleep" for a certain amount of time between requests, thus simulating a user reading the page.)

Here is the official introduction:

<blockquote>
 Web Capacity Analysis Tool (WCAT) is a
 lightweight HTTP load generation tool
 primarily designed to measure the
 performance of a web server within a
 controlled environment. WCAT can
 simulate thousands of concurrent users
 making requests to a single web site
 or multiple web sites. The WCAT
 engine uses a simple script to define
 the set of HTTP requests to be played
 back to the web server. Extensibility
 is provided through plug-in DLLs and a
 standard, simple API.
</blockquote>

Perhaps its only downside is that it is a bit compicated to set up at first. It is a command line tool so it is also a bit too easy to screw up with the parameters.

blocks|key|2982723|text|对于复杂的站点，您可以使用WebLOAD。它不是免费的，但也不是太贵。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2982724|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|$]]

For complex sites you can use WebLOAD. It's not free, but not too expensive either.

blocks|key|4392291|text|如果应用程序无法工作/扩展，财务风险是什么？|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4392292|在决定是上线还是调优%7C修改现有应用程序时，性能测试输出的财务价值是什么？|4392293|测试的财务影响和输出价值如何与您的工具问题成本相匹配？|4392294|一般来说，如果风险高到值得进行性能测试，那么可靠的性能测试的输出价值将使部署进行测试的任何工具的成本相形见绌。这里的警告是，您需要愿意引入一位可靠的性能工程师来设计和运行测试，因为即使是最便宜的测试工具也可能在healm的技能不足的人的情况下运行大量负ROI+(而且这种情况一直都在发生)。|4392295|entityMap^0|0|M|0|0|10|0|0|R|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|W|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|M|$]]

What is the financial risk if the application does not work/scale?

What is the financial value of the output of the performance tests in deciding to go live or tune|modify the existing application?

How does the financial impact and the value of the output of the tests match to your cost of tool issue? 

Generally speaking if the risk is high enough to merit a performance test then the value of the output of a solid performance test will dwarf the cost of any tool deployed to conduct the test. The caveat here is that you need to be willing to bring on board a solid performance engineer to design and run the tests, for even the least expensive test tools can run a substantial negative ROI with an insufficiently skilled person at the healm ( and it happens all the time ).

I'm part of a team developing a new web-based product for our company.
Whilst we're pretty positive the application will work perfectly with our expected average of 10-50 concurrent users, we have a requirement to ensure it will continue to work correctly for 1000 concurrent users.

Our primary concern is around the loading and displaying of various documents from the file system. To get the files, the user would need to log in, navigate to a search page, wait for a search to complete, then click a link and wait for the document to load.

We have SilkTest/TestPartner, which can be configured to go through the steps above, but I don't believe these tools can realistically be used to simulate load to the extent we require.

Can you suggest some (preferably free / open source) programs?
Commercial products aren't a no-go, but the price cannot be enormous :)

Thanks in advance!

What tool(s) for fairly complex stress testing a web application

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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我是为我们公司开发一个新的基于网络的产品的团队的一员。虽然我们非常肯定该应用程序将与我们预期的平均10-50个并发用户完美地工作，但我们有一个要求，以确保它将继续正确地为1000个并发用户工作。我们主要关注的是从文件系统加载和显示各种文档。要获取文件，用户需要登录，导航到搜索页面，等待搜索完成，然后单击链接并等待文档加载。我们有SilkTest/TestPartner，它可以配置为完成上面的步骤，

问用于相当复杂的web应用程序压力测试的工具是什么
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