用过ASP.NET的人都知道吧，页面首次打开很慢。
本来网站第一次启动就慢，但别的页面如果没有访问过，去访问也会慢。
好吧，你也许认为它是在编译ASPX，或者加载一些东西。
我也这样认为过。
不过我发现不是这样的。
1.bin目录里面你放多少它加载多少，如果放一些无效的DLL，比如在32位下面放一些纯64位的DLL，就会直接报错；
2.aspx页面解析非常快，那么转成CS也是一瞬间，编译更不用说，不应该是卡上2－5秒，1秒是可以接受的；
那么要做的就是不让它干这些坏事，总之我从来都不觉得它会老老实实的给你服务。
禁止证书的验证过程：
1、在下面aspnet.config文件中加入下面内容：
32位系统：C:\Windows\Microsoft.Net\Framework\v2.0.50727\aspnet.config
64位系统：C:\Windows\Microsoft.NET\Framework64\v2.0.50727\aspnet.config
有4.0，甚至4.5的自己多改几个地方，如果是64位的系统，可能需要以管理员身份打开编辑器，再打开这个文件，否则无法保存的。
[xhtml] 查看源代码 复制 1. <?xml version="1.0" encoding="utf-8"?> 2. <configuration> 3. <runtime> 4. <generatePublisherEvidence enabled="false"/> 5. </runtime> 6. </configuration>
对"Network Service"帐号下运行的所有程序禁止证书检查
不会的话就忽略吧。
导入以下注册表内容，自己先另存为*.reg文件吧，如果会手工操作的话，就手工来吧。
[txt] 查看源代码 复制 1. Windows Registry Editor Version 5.00 2. 3. [HKEY_USERS\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing] 4. 5. "State"=dword:00023e00
然后记得重启一下应用程序池（实在不知道，就重启IIS服务），再去看看你的网站，首次加载快吗？其它页面访问快吗？
忍受不了时，就再也不用忍受！
下面是专业的分析记录，看不懂就当没见过吧。。。
详细分析 ========== 这个时候如果我们抓取一个hang dump的话，页面所对应的managed callstack往往如下，很明显它正在加载一个Assembly 0:022> !CLRStack OS Thread Id: 0xeb4 (22) Child-SP RetAddr Call Site 000000001af1c900 000007fef91747c3 System.Reflection.Assembly.InternalLoad(System.Reflection.AssemblyName, System.Security.Policy.Evidence, System.Threading.StackCrawlMark ByRef, Boolean) 000000001af1c990 000007ff0141f0f9 System.Reflection.Assembly.Load(System.Reflection.AssemblyName) 000000001af1c9d0 000007fef9fdd502 Microsoft.SharePoint.Portal.WebControls.StringResourceManager..cctor() 000000001af1db50 000007ff014135e2 Microsoft.SharePoint.Portal.WebControls.MySiteLinkUserControl.SetControl() 000000001af1dce0 000007fef398e04f Microsoft.SharePoint.Portal.WebControls.MySiteLinkUserControl.OnInit(System.EventArgs) 000000001af1de80 000007fef398f3af System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1dee0 000007ff014133c8 System.Web.UI.Control.AddedControl(System.Web.UI.Control, Int32) 000000001af1df50 000007ff0134115e Microsoft.SharePoint.WebControls.DelegateControl.AddControlResilient(System.Web.UI.Control) 000000001af1dff0 000007fef398fb22 Microsoft.SharePoint.WebControls.DelegateControl.CreateChildControls() 000000001af1e170 000007ff01341024 System.Web.UI.Control.EnsureChildControls() 000000001af1e1d0 000007fef398e04f Microsoft.SharePoint.WebControls.DelegateControl.OnInit(System.EventArgs) 000000001af1e210 000007fef398e147 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e270 000007fef398e147 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e2d0 000007fef398e147 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e330 000007fef398e147 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e390 000007fef398e147 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e3f0 000007fef398a935 System.Web.UI.Control.InitRecursive(System.Web.UI.Control) 000000001af1e450 000007fef398a1f0 System.Web.UI.Page.ProcessRequestMain(Boolean, Boolean) 000000001af1e520 000007fef398a11b System.Web.UI.Page.ProcessRequest(Boolean, Boolean) 000000001af1e580 000007fef398a0b0 System.Web.UI.Page.ProcessRequest() 000000001af1e5e0 000007fef3991557 System.Web.UI.Page.ProcessRequest(System.Web.HttpContext) 000000001af1e640 000007fef395567b System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 000000001af1e6f0 000007fef39634b5 System.Web.HttpApplication.ExecuteStep(IExecutionStep, Boolean ByRef) 000000001af1e790 000007fef3954733 System.Web.HttpApplication+ApplicationStepManager.ResumeSteps(System.Exception) 000000001af1e840 000007fef3958a54 System.Web.HttpApplication.System.Web.IHttpAsyncHandler.BeginProcessRequest(System.Web.HttpContext, System.AsyncCallback, System.Object) 000000001af1e8a0 000007fef395863c System.Web.HttpRuntime.ProcessRequestInternal(System.Web.HttpWorkerRequest) 000000001af1e930 000007fef395726c System.Web.HttpRuntime.ProcessRequestNoDemand(System.Web.HttpWorkerRequest) 000000001af1e970 000007fef9fdd502 System.Web.Hosting.ISAPIRuntime.ProcessRequest(IntPtr, Int32) 其实它所要加载的Assembly名字如下 Microsoft.SharePoint.Portal.intl 此线程所对应的native callstack如下 0:022> k20 Child-SP RetAddr Call Site 00000000'1af1a208 000007fe'fdc610ac ntdll!ZwWaitForSingleObject+0xa 00000000'1af1a210 000007fe'f5dfa2fa KERNELBASE!WaitForSingleObjectEx+0x79 00000000'1af1a2b0 000007fe'f5df76fa cryptnet!CryptRetrieveObjectByUrlWithTimeout+0x263 00000000'1af1a5b0 000007fe'f5df4646 cryptnet!CryptRetrieveObjectByUrlW+0x20f 00000000'1af1a7a0 000007fe'f5df9c34 cryptnet!RetrieveObjectByUrlValidForSubject+0x162 00000000'1af1a8d0 000007fe'f5df4243 cryptnet!RetrieveTimeValidObjectByUrl+0x2de 00000000'1af1a9c0 000007fe'f5df3c72 cryptnet!CTVOAgent::GetTimeValidObjectByUrl+0x2e3 00000000'1af1ab20 000007fe'f5df38ad cryptnet!CTVOAgent::GetTimeValidObject+0x7cf 00000000'1af1ad00 000007fe'f5df3810 cryptnet!FreshestCrlFromCrlGetTimeValidObject+0x61 00000000'1af1ad70 000007fe'f5df99fc cryptnet!CryptGetTimeValidObject+0xb0 00000000'1af1adf0 000007fe'f5df345d cryptnet!GetTimeValidCrl+0x4b7 00000000'1af1af30 000007fe'f5df3f82 cryptnet!GetBaseCrl+0x7d 00000000'1af1afc0 000007fe'f5df3d58 cryptnet!MicrosoftCertDllVerifyRevocation+0x238 00000000'1af1b110 000007fe'fdb157c7 cryptnet!CertDllVerifyRevocation+0x28 00000000'1af1b160 000007fe'fdb1552e crypt32!VerifyDefaultRevocation+0x398 00000000'1af1b250 000007fe'fdb15c09 crypt32!CertVerifyRevocation+0x144 ... 00000000'1af1bcc0 000007fe'f9e46c27 mscorwks!PEFile::CheckSecurity+0x39b924 00000000'1af1bd50 000007fe'f9e5eb5d mscorwks!PEAssembly::DoLoadSignatureChecks+0x37 00000000'1af1bd90 000007fe'f9e52ff8 mscorwks!PEAssembly::PEAssembly+0x12d 00000000'1af1be00 000007fe'f9e40b9d mscorwks!PEAssembly::DoOpen+0x11c 00000000'1af1c130 000007fe'f9f24a3e mscorwks!PEAssembly::Open+0x71 从这些函数名我们知道它正在做一些证书检查之类的事情。而实际上它正在等待下面的这个线程。 0:036> kn # Child-SP RetAddr Call Site 00 00000000'2409e1c8 000007fe'fdc610ac ntdll!ZwWaitForSingleObject+0xa 01 00000000'2409e1d0 000007fe'f5d7f38e KERNELBASE!WaitForSingleObjectEx+0x79 02 00000000'2409e270 000007fe'f5d80a27 winhttp!IsWpadEnabledForConnectedNetworks+0x1f2 03 00000000'2409e340 000007fe'f5d806dc winhttp!ReadWinInetProxySettings+0x1c3 04 00000000'2409e3c0 000007fe'f5dfae42 winhttp!WinHttpGetIEProxyConfigForCurrentUser+0x28a 05 00000000'2409e510 000007fe'f5df9237 cryptnet!InetGetProxy+0x11e 06 00000000'2409e600 000007fe'f5df983d cryptnet!InetSendAuthenticatedRequestAndReceiveResponse+0x190 07 00000000'2409f770 000007fe'f5df9d9c cryptnet!InetSendReceiveUrlRequest+0x57e ..... 0:036> .frame 7 07 00000000'2409f770 000007fe'f5df9d9c cryptnet!InetSendReceiveUrlRequest+0x57e [d:\w7rtm\ds\security\cryptoapi\pki\rpor\inetsp.cpp @ 2603] 0:036> dv hInetSession = 0x00000000'218211f0 pwszUrl = 0x00000000'1f8abe50 "http://crl.microsoft.com/pki/crl/products/CSPCA.crl" dwRetrievalFlags = 1 pCredentials = 0x00000000'00000000 pcba = 0x00000000'2409fab0 ppfnFreeObject = 0x00000000'2409fb38 ppvFreeContext = 0x00000000'2409fb30 pAuxInfo = 0x00000000'1f8abd78 phInetRequest = 0x00000000'00000000 我们可以看到，当时我们抓取dump的时候它正在尝试连接http://crl.microsoft.com/pki/crl/products/CSPCA.crl
