blocks|key|1601561|text|对于您的特定情况，需要增加IIS中的idle-timeout选项，因为该延迟是由于ASP.NET加载二进制文件和启动应用程序造成的。默认值为20分钟，因此如果在20分钟内没有人访问该站点，IIS将关闭该进程，并且下一个请求将需要很长时间才能启动。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1601562|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 your particular case, you need to increase the idle-timeout option in IIS because that delay is due to ASP.NET loading the binaries and starting your application. The default is 20 minutes, so if nobody accesses the site for 20 minutes, IIS will shut down the process and the next request will take a long time to start up.

blocks|key|1386712|text|是否应用程序池在一段时间内处于非活动状态时正在关闭？应用程序池需要一些时间才能启动备份。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1386713|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|$]]

Maybe the application pool is shutting down when there is a period of inactivity? The application pool would take some time to start back up.

blocks|key|1386771|text|希望这能有所帮助：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1386772|Best+Practices+for+Speeding+Up+Your+Web+Site|offset|length|1386773|Scaling+Strategies+for+ASP.NET+Applications|1386774|IIS+Tuning|1386775|14+Rules+for+Faster-Loading+Web+Sites|1386776|Best+practices+for+creating+websites+in+IIS+6.0|1386777|Stanford+Computer+Cience+-+High+Performance+Web+Sites|1386778|10+Tips+for+Writing+High-Performance+Web+Applications|1386779|Writing+High-Performance+Managed+Applications+:+A+Primer|1386780|Nine+tips+for+a+healthy+"in+production"+ASP.NET+application|1386781|Speedy+C#,+Part+2:+Optimizing+Memory+Allocations+-+Pooling+and+Reusing+Objects|1386782|Memory+Usage+Auditing+For+.NET+Applications|1386783|Troubleshooting+HTTP+Compression+in+IIS+6.0|1386784|Maximizing+IIS+Performance+-+25+tips|1386785|Optimizing+IIS+6.0+Performance|1386786|Page+Speed+-+an+open-source+Firefox/Firebug+Add-on|1386787|Performance+Testing+Guidance+for+Web+Applications|1386788|Top+10+Performance+Improvements+in+IIS+7.0|1386789|CHAPTER+6+Optimizing+IIS+6.0+Performance|1386790|Performance+Tuning+Guidelines+for+Windows+Server+2003+-+Performance+Tuning+for+IIS+6.0|1386791|ASP.NET+Performance+Tips|1386792|IIS+6.0+Tuning+for+Performance+-+by+Peter+A.+Bromberg,+Ph.D.|1386793|Improving+.NET+Application+Performance+and+Scalability+-+by+MS|1386794|Optimizing+and+Performance+Tuning+IIS+6.0|1386795|12+Steps+To+Faster+Web+Pages+With+Visual+Round+Trip+Analyzer|1386796|Thread:+IIS+6+performance+tweak+guide+(draft)|1386797|CPU+Settings+for+an+Application+Pool+++IIS6+e+IIS7|1386798|伟大的改进小贴士：|1386799|Running+ASMX+Web+Services+on+STA+Threads|1386800|Scale+Net|1386801|测量，测量，测量：|1386802|对您的站点进行负载测试|1386803|Show+Slow|1386804|Performance+Monitor+Wizard|1386805|Two+Minute+Drill:+Introduction+to+XPerf|1386806|Suggested+Performance+Counters+to+Watch+(IIS+6.0)|1386807|看看最好的网站做了什么：|1386808|Benchmarks|1386809|TOP+100|1386810|更多资源：|1386811|Learn+papers|1386812|我的经验告诉我：|1386813|在IIS中为静态数据启用压缩(GZIP/Deflate)。简单的实现和出色的results.if+cpu不是您的问题，也可以尝试为动态数据启用压缩。|1386814|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.yahoo.com/performance/rules.html|1|http://msdn.microsoft.com/en-us/magazine/cc500561.aspx|2|http://forums.iis.net/p/1148571/1866074.aspx|3|http://stevesouders.com/hpws/rules.php|4|http://msmvps.com/blogs/omar/archive/2008/10/04/best-practices-for-creating-websites-in-iis-6-0.aspx|5|http://cs193h.stevesouders.com/|6|http://msdn.microsoft.com/en-us/magazine/cc163854.aspx|7|http://msdn.microsoft.com/en-us/library/ms973858.aspx|8|http://blogs.msdn.com/dougste/archive/2006/04/05/568671.aspx|9|http://geekswithblogs.net/robp/archive/2008/08/07/speedy-c-part-2-optimizing-memory-allocations---pooling-and.aspx|10|http://msdn.microsoft.com/en-us/magazine/dd882521.aspx|11|http://blogs.iis.net/webtopics/archive/2009/02/24/troubleshooting-http-compression-in-iis-6-0.aspx|12|http://technet.microsoft.com/en-us/library/bb742459.aspx|13|http://technet.microsoft.com/en-us/library/cc728451(WS.10).aspx|14|http://code.google.com/speed/page-speed/|15|http://www.guidanceshare.com/wiki/Performance_Testing_Guidance_for_Web_Applications|16|http://technet.microsoft.com/en-us/magazine/2008.09.iis.aspx|17|http://www.microsoft.com/downloads/details.aspx?FamilyID=80A1B6E6-829E-49B7-8C02-333D9C148E69&displaylang=en|18|http://www.microsoft.com/windowsserver2003/evaluation/performance/tuning.mspx|19|http://aspalliance.com/1533_ASPNET_Performance_Tips.7|20|http://www.eggheadcafe.com/articles/20050613.asp|21|http://www.microsoft.com/downloads/details.aspx?FamilyId=8A2E454D-F30E-4E72-B531-75384A0F1C47&displaylang=en|22|http://www.informit.com/articles/article.aspx?p=335881|23|http://msdn.microsoft.com/en-us/magazine/dd188562.aspx|24|http://forums.iis.net/t/1148571.aspx|25|http://www.iis.net/ConfigReference/system.applicationHost/applicationPools/add/cpu|26|http://msdn.microsoft.com/en-us/magazine/cc163544.aspx|27|http://download.microsoft.com/download/a/7/e/a7ea6fd9-2f56-439e-a8de-024c968f26d1/ScaleNet.pdf|28|http://www.showslow.com/|29|http://www.microsoft.com/download/en/details.aspx?id=24832|30|http://blogs.technet.com/b/askperf/archive/2008/06/27/an-intro-to-xperf.aspx|31|http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/7898b860-462c-4846-a3a8-1179f287ad88.mspx?mfr=true|32|http://www.gomez.com/benchmarks/|33|http://www.alexa.com/topsites?cc=US&ts_mode=country&lang=none|34|http://www.gomez.com/resources/^0|0|0|18|0|0|0|17|1|0|0|A|2|0|0|11|3|0|0|1B|4|0|0|1H|5|0|0|1H|6|0|0|1K|7|0|0|1N|8|0|0|26|9|0|0|17|A|0|0|17|B|0|0|10|C|0|0|U|D|0|0|1E|E|0|0|1D|F|0|0|16|G|0|0|14|H|0|0|2E|I|0|0|O|J|0|0|1O|K|0|0|1Q|L|0|0|15|M|0|0|1O|N|0|0|19|O|0|0|1E|P|0|0|0|14|Q|0|0|9|R|0|0|0|0|9|S|0|0|Q|T|0|0|13|U|0|0|1D|V|0|0|0|A|W|0|0|7|X|0|0|0|C|Y|0|0|0^^$0|@$1|2|3|4|5|6|7|4T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|4U|8|@]|9|@$D|4V|E|4W|1|4X]]|A|$]]|$1|F|3|G|5|6|7|4Y|8|@]|9|@$D|4Z|E|50|1|51]]|A|$]]|$1|H|3|I|5|6|7|52|8|@]|9|@$D|53|E|54|1|55]]|A|$]]|$1|J|3|K|5|6|7|56|8|@]|9|@$D|57|E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Hope this helps: 
<a href="http://developer.yahoo.com/performance/rules.html" rel="nofollow noreferrer">Best Practices for Speeding Up Your Web Site</a> 
<a href="http://msdn.microsoft.com/en-us/magazine/cc500561.aspx" rel="nofollow noreferrer">Scaling Strategies for ASP.NET Applications</a> 
<a href="http://forums.iis.net/p/1148571/1866074.aspx" rel="nofollow noreferrer">IIS Tuning</a> 
<a href="http://stevesouders.com/hpws/rules.php" rel="nofollow noreferrer">14 Rules for Faster-Loading Web Sites</a> 
<a href="http://msmvps.com/blogs/omar/archive/2008/10/04/best-practices-for-creating-websites-in-iis-6-0.aspx" rel="nofollow noreferrer">Best practices for creating websites in IIS 6.0</a> 
<a href="http://cs193h.stevesouders.com/" rel="nofollow noreferrer">Stanford Computer Cience - High Performance Web Sites</a> 
<a href="http://msdn.microsoft.com/en-us/magazine/cc163854.aspx" rel="nofollow noreferrer">10 Tips for Writing High-Performance Web Applications</a> 
<a href="http://msdn.microsoft.com/en-us/library/ms973858.aspx" rel="nofollow noreferrer">Writing High-Performance Managed Applications : A Primer</a> 
<a href="http://blogs.msdn.com/dougste/archive/2006/04/05/568671.aspx" rel="nofollow noreferrer">Nine tips for a healthy "in production" ASP.NET application</a> 
<a href="http://geekswithblogs.net/robp/archive/2008/08/07/speedy-c-part-2-optimizing-memory-allocations---pooling-and.aspx" rel="nofollow noreferrer">Speedy C#, Part 2: Optimizing Memory Allocations - Pooling and Reusing Objects</a> 
<a href="http://msdn.microsoft.com/en-us/magazine/dd882521.aspx" rel="nofollow noreferrer">Memory Usage Auditing For .NET Applications</a> 
<a href="http://blogs.iis.net/webtopics/archive/2009/02/24/troubleshooting-http-compression-in-iis-6-0.aspx" rel="nofollow noreferrer">Troubleshooting HTTP Compression in IIS 6.0</a> 
<a href="http://technet.microsoft.com/en-us/library/bb742459.aspx" rel="nofollow noreferrer">Maximizing IIS Performance - 25 tips</a> 
<a href="http://technet.microsoft.com/en-us/library/cc728451(WS.10).aspx" rel="nofollow noreferrer">Optimizing IIS 6.0 Performance</a> 
<a href="http://code.google.com/speed/page-speed/" rel="nofollow noreferrer">Page Speed - an open-source Firefox/Firebug Add-on</a> 
<a href="http://www.guidanceshare.com/wiki/Performance_Testing_Guidance_for_Web_Applications" rel="nofollow noreferrer">Performance Testing Guidance for Web Applications</a> 
<a href="http://technet.microsoft.com/en-us/magazine/2008.09.iis.aspx" rel="nofollow noreferrer">Top 10 Performance Improvements in IIS 7.0</a> 
<a href="http://www.microsoft.com/downloads/details.aspx?FamilyID=80A1B6E6-829E-49B7-8C02-333D9C148E69&amp;displaylang=en" rel="nofollow noreferrer">CHAPTER 6 Optimizing IIS 6.0 Performance</a> 
<a href="http://www.microsoft.com/windowsserver2003/evaluation/performance/tuning.mspx" rel="nofollow noreferrer">Performance Tuning Guidelines for Windows Server 2003 - Performance Tuning for IIS 6.0</a> 
<a href="http://aspalliance.com/1533_ASPNET_Performance_Tips.7" rel="nofollow noreferrer">ASP.NET Performance Tips</a> 
<a href="http://www.eggheadcafe.com/articles/20050613.asp" rel="nofollow noreferrer">IIS 6.0 Tuning for Performance - by Peter A. Bromberg, Ph.D.</a> 
<a href="http://www.microsoft.com/downloads/details.aspx?FamilyId=8A2E454D-F30E-4E72-B531-75384A0F1C47&amp;displaylang=en" rel="nofollow noreferrer">Improving .NET Application Performance and Scalability - by MS</a> 
<a href="http://www.informit.com/articles/article.aspx?p=335881" rel="nofollow noreferrer">Optimizing and Performance Tuning IIS 6.0</a> 
<a href="http://msdn.microsoft.com/en-us/magazine/dd188562.aspx" rel="nofollow noreferrer">12 Steps To Faster Web Pages With Visual Round Trip Analyzer</a> 
<a href="http://forums.iis.net/t/1148571.aspx" rel="nofollow noreferrer">Thread: IIS 6 performance tweak guide (draft)</a> 
<a href="http://www.iis.net/ConfigReference/system.applicationHost/applicationPools/add/cpu" rel="nofollow noreferrer">CPU Settings for an Application Pool IIS6 e IIS7</a> 

Great improvements tips : 
<a href="http://msdn.microsoft.com/en-us/magazine/cc163544.aspx" rel="nofollow noreferrer">Running ASMX Web Services on STA Threads</a> 
<a href="http://download.microsoft.com/download/a/7/e/a7ea6fd9-2f56-439e-a8de-024c968f26d1/ScaleNet.pdf" rel="nofollow noreferrer">Scale Net</a> 

Measure, measure, measure : 
Load Test Your Site 
<a href="http://www.showslow.com/" rel="nofollow noreferrer">Show Slow</a> 
<a href="http://www.microsoft.com/download/en/details.aspx?id=24832" rel="nofollow noreferrer">Performance Monitor Wizard</a> 
<a href="http://blogs.technet.com/b/askperf/archive/2008/06/27/an-intro-to-xperf.aspx" rel="nofollow noreferrer">Two Minute Drill: Introduction to XPerf</a> 
<a href="http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/7898b860-462c-4846-a3a8-1179f287ad88.mspx?mfr=true" rel="nofollow noreferrer">Suggested Performance Counters to Watch (IIS 6.0)</a> 

See what the best sites did : 
<a href="http://www.gomez.com/benchmarks/" rel="nofollow noreferrer">Benchmarks</a> 
<a href="http://www.alexa.com/topsites?cc=US&amp;ts_mode=country&amp;lang=none" rel="nofollow noreferrer">TOP 100</a> 

More resource : 
<a href="http://www.gomez.com/resources/" rel="nofollow noreferrer">Learn papers</a> 

My experience says: 
- Enable compression (GZIP/Deflate) in IIS, for Static data. Simple to implement and with excellent results. 
- if cpu is not your problem try to enable compression for dynamic data as well.

I have a reoccurring issue where a customer calls up and complains that the web site is too slow. Specifically, if they are inactive for a short period of time, then go back to the site, there will be a minute-two minute delay before the user sees a response. (the standard browser is Firefox in this case)

I have Perfmon up and running, the cpu utilization is usually below 20% (single proc...don't ask). The database is humming along. And I'm pulling my hair out.

So, what metrics/tools do you find useful when evaluating IIS performance?

How to track IIS server performance

负载测试

数据库

我有一个重复出现的问题，客户打电话来抱怨网站太慢了。具体地说，如果它们在短时间内不活动，则返回站点，在用户看到响应之前会有一分钟到两分钟的延迟。(在本例中，标准浏览器是Firefox )我已经启动并运行了Perfmon，cpu利用率通常低于20% (单进程...不要问)。数据库运行得很顺利。我把头发都拔出来了。那么，在...

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