HPs Open Source HTTPerf I like. Just setup the URLS you want to test and let it rip. use a couple of machines to emulate load. You could even parse the output into a DB and do some number crunching.
Also, think about doing HTTPerf runs with profiling on the server side to see what lags and what doesnt. A nice touch is to let a user go on the app, and record all POST/GET requests and use them as a replay set for typical user interactions.
市场上很少有分析性能工具（不是免费的），我使用过并且效果很好的一个是 New Relic。如果您只想测试 api，那么 http://locust.io/ 是不错的选择，而且也是免费的。
There are few analytical performance tool out in market(not free) one i came through and works well is New Relic. If you are looking only to test the api then http://locust.io/ is good one and free too.
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我喜欢 jMeter - 免费软件并且做得很好。
一些介绍性截屏视频：
http://www.fosscasts.com/ screencasts/3-Load-Testing-with-Apache-JMeter
http://vimeo.com/10164982
I like jMeter - free software and does the job quite well.
Few intro screencasts:
http://www.fosscasts.com/screencasts/3-Load-Testing-with-Apache-JMeter
http://vimeo.com/10164982
HP 开源 HTTPerf 我喜欢。只需设置您想要测试的 URL，然后就可以了。使用几台机器来模拟负载。您甚至可以将输出解析到数据库中并进行一些数字运算。
另外，考虑在服务器端运行 HTTPerf 并进行分析，以查看哪些滞后，哪些不滞后。一个不错的做法是让用户继续使用应用程序，记录所有 POST/GET 请求并将它们用作典型用户交互的重播集。
另外，如果您正在考虑 UX，请使用 firebug 或其他工具来检查 JS 导入是否是异步完成的，而不是一次一个。看看 Stackoverflow 问题 310583/loading-javascript-dependency-on-demand
HPs Open Source HTTPerf I like. Just setup the URLS you want to test and let it rip. use a couple of machines to emulate load. You could even parse the output into a DB and do some number crunching.
Also, think about doing HTTPerf runs with profiling on the server side to see what lags and what doesnt. A nice touch is to let a user go on the app, and record all POST/GET requests and use them as a replay set for typical user interactions.
Also, if you are thinking about UX, use firebug or something to check JS imports are being done asynchronously instead of one-at-a-time. Have a ganders at Stackoverflow question 310583/loading-javascript-dependencies-on-demand
http://loadimpact.com/
WebLoad：专业、开放
源负载测试 来自
CFMeetup
http://loadimpact.com/
WebLoad: Professional and open
source load testing from
CFMeetup
Visual Studio Ultimate 版本具有出色的负载/压力测试工具，尽管 Ultimate 版本可能有点贵。
Visual Studio Ultimate edition has great load/stress testing tools, although the ultimate edition can be a bit expensive.
我使用完整版 JBlitz Professional 5.0 ..
非常好
m using Full version of JBlitz Professional 5.0 ..
it's very good
市场上很少有分析性能工具（不是免费的），我使用过并且效果很好的一个是 New Relic。如果您只想测试 api，那么 http://locust.io/ 是不错的选择，而且也是免费的。
There are few analytical performance tool out in market(not free) one i came through and works well is New Relic. If you are looking only to test the api then http://locust.io/ is good one and free too.