But bear in mind that time spent inside your .NET code isn't the only influence on the performance of your website.
http://developer.yahoo.com/yslow/ helps a lot to optimise e.g. transfer/markup issues. Under normal circumstances, your peak load is likely to be bottlenecked by bandwidth long before it's bottlenecked by processor time.
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我知道一个很棒的商业产品：来自 Red-gate 的 Ants。易于使用，详细，但不幸的是不是免费的。
还有 EQATEC，它更便宜（甚至免费供个人使用！），但我有没有使用它的经验。
I know of a great commercial product: Ants from Red-gate. Easy to use, detailed, though unfortunately not free.
There is also EQATEC, which is cheaper (even free for personal use!), but I have no experience in using it.
JetBrains dotTrace 和 Redgate ANTS
JetBrains dotTrace and Redgate ANTS
嗯，dotTrace Profiler 确实很好。对于负载测试，您可以使用 jMeter
Well, dotTrace Profiler is really good. For load testing you could go with jMeter
我个人可以推荐 EQATEC。主要是因为它足够并且免费。
：使用 EQATEC Profiler 分析 ASP.NET 网站
另请参阅 请注意，花费在 .NET 代码中的时间并不是影响网站性能的唯一因素。
http://developer.yahoo.com/yslow/ 对优化有很大帮助，例如传输/标记问题。在正常情况下，您的峰值负载很可能早在处理器时间成为瓶颈之前就已经成为带宽瓶颈。
I can personally recommend EQATEC. Primarily because it's sufficient and free.
See also: Profiling ASP.NET websites with EQATEC Profiler
But bear in mind that time spent inside your .NET code isn't the only influence on the performance of your website.
http://developer.yahoo.com/yslow/ helps a lot to optimise e.g. transfer/markup issues. Under normal circumstances, your peak load is likely to be bottlenecked by bandwidth long before it's bottlenecked by processor time.