IIS7 Integrated Pipeline Mode Slower Than Classic?
Sep 20, 2010
we are running a complex 64-bit ASP.NET 2.0 application on W2008 R2 Standard and stress tests done with VS2008 Team System have indicated that integrated pipeline mode is 30% slower than classic mode.
We have compared the application traces extensively and it appears that integrated mode is uniformly slower than classic. That is, there is no single point that causes delays in integrated mode.
This is quite the opposite to everything Microsoft says about the integrated pipeline, so it might be that there is something quite wrong with the configuration of the integrated mode or the server. But we have not found any settings that would have any effect on this. Some complaints that Sharepoint and reporting services are slower in integrated mode can be found, but our application does not use them so this is quite likely unrelated.
am trying to write an HttpModule that will work in IIS7 with integrated pipeline mode AppPool. Within this module I need to access Session variables and to be able to capture the Session Start and End events. I have found a couple of articles on this topic that indicate the need to modify the behavior of the HttpHandler in PostAcquireRequestState to force the Session for the context to be initialized. The article I am using as a template is posted here:[URL]In my case I am getting the following error:
[NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineModuleStepContainer.GetEventCount(RequestNotification notification, Boolean isPostEvent) +30 System.Web.PipelineStepManager.ResumeSteps(Exception error) +1112 System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +113 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +616
I believe that this error implies a problem with attempting to attach an event handler multiple times. I am aware that the modules Init function can be called more than once and have set a static initialization flag which ensures that I will only ever attach the event handler once.In the most condensed form my code is as follows:
public class HttpModule : IHttpModule, IRequiresSessionState
I'm working on a website with legacy Classic ASP pages (being converted to ASP.NET on an as needed basis) and new ASP.NET pages. Use of IIS 7 Integrated Pipeline has been very helpful with our configuration. For example, we were able to get forms authentication working auto-magically with the classic ASP pages simply by configuring the appropriate sections of the web.config file (i.e. no changes were required to the Classic ASP pages, for more info see this).
A colleague of mine believes that custom error pages, as specified in the web.config <customErrors> section, should also be auto-magically applied to the classic ASP pages, but for our website it only works for the ASP.NET pages. Nor have I been able to find any information describing the capability of applying custom error pages to Classic ASP with the IIS 7 integrated pipeline. Is it possible to apply custom error pages to Classic ASP pages per a web.config for an website running under IIS7 with integrated pipeline? If so, how?
Firstly there's a great overview of the IIS7 HTTP request lifecycle and various settings that affect performance here:
ASP.NET Thread Usage on IIS 7.0 and 6.0
Very specifically though, in dotNet 4 the defaults for maxConcurrentRequestsPerCPU and requestsQueueLimit are set to 5000. E.g. equivalent to: (in aspnet.config):[code]....
Seems to me that on a multi-CPU/core server the requestQueueLimit here will always be invoked well berfore the 'perCPU' limit. Thus, if a max of 5000 requests per CPU is what you actually want then I would expect that the requestQueueLimit needs to be increased to 5000 * CPUCount or just disabled altogether.
Is my interpretation correct? If so can I disable requestQueueLimit? (set it to zero?). The documentation on this setting doesn't appear to address this question (so maybe I'm missing something or misreading?)
** side note from the above article: The requestQueueLimit is poorly named. It actually limits the maximum number of requests that can be serviced by ASP.NET concurrently. This includes both requests that are queued and requests that are executing. If the "Requests Current" performance counter exceeds requestQueueLimit, new incoming requests will be rejected with a 503 status code)
Is it possible to check if our code is executing in Integrated Pipeline Mode or not?
There are some ASP.NET class properties that only work in Integrated Pipeline Mode, and I want to avoid raising an exception if there is a way to test if our code is executing in that environment or not.
I try to install IIS 7 on my Win 7, whenever I check . Net Extensibility . AsP .net under Application Development Feature and run http://localhost I get http error 500.24. An asp .net setting has been detected that does not apply in Integrated managed pipeLine mode
I am trying to export crystal report to pdf in asp.net, though the code is working well on localhost but on server I get error
HTTP Error 500.23 - Internal Server ErrorAn ASP.Net setting detected that does not apply in Integrated managed pipeline mode.
The crystal report is showing abnormal behaviors.I am using a CrystalReportViewer on which i have set the CrystalReportSource1 using the viewer Tasks.
The code on page load is :-
cn.Open(); DataSet ds = new DataSet(); string sql = "select * from Test"; OleDbDataAdapter da = new OleDbDataAdapter(sql, cn); da.Fill(ds);
[Code].....
During the troubleshooting i encountered another unusual issue, where i tried a new crystal report with just simple report. That simple crystal report is not showing data & the toolbar images are not rendered. I googled on this but didn't found conclusive thing.
Our code relies on checking the Context.User.Identity value in the Global.asax Application AuthenticateRequest(...) method to retrieve some information about the logged in user. This works fine in classic mode but when I flip IIS to use the Integrated Pipeline "Context.User" comes back as null, but only intermittently.I have < authentication mode="Windows"> and only Windows Auth enabled in the Virtual Directory.
I fill a third-pard component variable in Global.Application_BeginRequest(). Everything is fine until I set IIS7 into the Integrated mode. In that case the method Application_BeginRequest() is not called (Application_Start is ok).May be some module is registered wrong?(I have found a same problem here on forum, but without a solution:[URL]
I just switched from Classic Mode to Integrated Mode and now HttpContext doesn't seem to exist in my ASP.NET application. I can't even add a Watch to HttpContext nor to HttpContext.Current.
I'm using FluorineFX where in the Web.config a HttpModule is defined. Apparently, in IIS7 Integrated Mode, these HttpModules need to be added to the Modules section in System.WebServer. I have done this, but now I'm having this HttpContext problem...
Code is in a simple service class being called by Flex (amf).
if (HttpContext.Current.User.Identity != null) { ... Web.Config (I don't know how to display this properly in Stack...): <?xml version="1.0" encoding="utf-8" ?>
First, a little background. I have written a custom HTTP compression module for ASP.NET. My development machine has Windows 7 Ultimate, which comes with IIS7. My production environment uses IIS6.
The problem I'm having is, Resource Expert Droid (redbot.org) tells me that I need to add a header to my response to properly support compression: "Vary: Accept-Encoding"
On IIS7 in integrated mode, it works properly. However, in classic mode, which is how my application ultimately runs, I cannot get my code to output this header using any of Response.AppendHeader(), Response.Cache.SetVaryByCustom(), or Response.Cache.VaryByHeaders.
In IIS6 the scenario below is working perfectly.I have an HttpModule called URLRedirect which examines URLS and by using RegEx rewrites of applicable. An example is a URL "/doc47.pdf" gets redirected to docpdf.ashx?id=47 Then the docpdf.ashx used the id value and, using a database builds an application/pdf document and returns it. Since I need to validate that the user has access to the data, the first line of the ProcessRequest(HttpContext context) function is:if (context.User.Identity.IsAuthenticated) ..... This is where the problem occurs, but more details first.
On a webpage, access to which is restricted to lgged on users who meet certain criteria there is a link which allows the user to present the page as a PDF document. This is achieved by using javascript to open a popup window using the window.open("/doc47.pdf", ... ) function.This all works fine under IIS6 and under IIS7 if I change the mode to Classic. But, under IIS7 in integrated mode, the following happens.The line in doc.ashx described above raises an exception because context.User == null. But, and this is interesting, if instead of using the link that opens the popup window I instead type /doc.pdf?id=47 into the address bar, the PDF document displays correctly.So this indicates to me that the URLRedirect Module is somehow losing the logged on user information.
I have a need to run an application in classic mode for backwards compatibility with a specific application, and am trying to understand what kind of impact that will have on the performance of an MVC application that is running on the site. If we put a few static file maps (for .js, .css, .png, etc) above the ASP.NET wildcard map to reduce the amount of processing by the ASP.NET handler, will we be approaching the integrated mode in terms of performance?
The thing i'm primarily concerned with is any effect this might have on output caching. I understand that integrated mode might (?) allow for the output cache to handle non ASP.NET content, but that isn't really a concern. We're more interested in ensuring that the MVC application has full use of the output cache. Empirically i've found that the two configurations operate on par when things go well, but if the page references resources that are not available, the integrated mode tends to fail much more quickly than the classic mode (e.g. 500 ms vs 10 seconds), reducing 'hang time' on the page load.
I am trying to get a asp.net 4.0 beta 2. website running that is working on my dev machine, but not when I published to my server. Where I get the HTTP 500.22 error when using the 4.0 as application pool and "Integrated" in "Managed Pipeline Mode".
I have an existing ASP.NET application and there is a requirement in which i need to use ASP.NET MVC in that. So altogether i need to mixing ASP.NET Webforms and ASP.NET MVC I am following an article [URL] I am done with all the steps. But its not working as expected.
[Code]....
When ever i add this to the web.config i am getting error. HTTP Error 500.22 - Internal Server Error An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode. ERROR CODE: 0x80070032 My OS is Vista Enterprise Edition.
Are you experienced with both ASP.NET and WPF coding? If so, I'll be grateful if you'll share your experience, We are estimating a 100-screen WPF project. Our estimation methodology involves characterizing the complexity of each screen. We then apply a standard number for the development time, based on the complexity and the technology. The standard number is based on the developer being good, not a super-star.
As the header says - ajax failed to load with pipeline set to integrated. When I turn it to classic it will work but not the routing !! I use asp.net 4.0 I register my route in global.asax
I am trying to debug an ASP.NET website in VS 2010. The website is running in classic pipeline mode in IIS 7 on a Windows 7 64 bit machine. For some reason my breakpoints are never hit. I use the attach to process method to attach to the w3wp.exe process. I do not have enable 32 bit application enabled on the app pool. If i use the integrated mode it does work. i would rather use the classic mode since my production server runs IIS 6.
When I run my website on local server asp.net routing works very well, but when I deploy it on a remote server ( asp 4.0 integrated pipeline ) it always returns with 404 error.
My url route is very simple, a stored procedure gets image's id and then displays it.
CWe've internal application written in ASP.NET, AJAX, SQL 2005. The problem is that sometimes response time (post back) is raising up to 10-30 second for some reson. The only way to make it faster is to restart browser (IE). Then it works really fast.
I have no clue what is causing this. Maybe it's viewstate, browser cache, browser memory clogging - I DON'T KNOW. The only thing I know is when I shut and reopen browser it's working fine. If I leave it open and come back in an hour or two it's really slow.
Iam working on a web form that incorporate ListView control with Ajax RoundCornerExtender.On my machine everything works fine, and looks okay. After uploading the page to the host server the ListView Item DIV with the round corners looks broken, I contacted the host server support and they asked me to check for version issues, I reinstalled the Ajax Control Toolkit as well as the .Net Framework 3.5 but still no change. When I change the ASP.NET version on the control panel from ver. 2.0 to ver. "2.0 Integrated pipeline" (they say its ver. 3.5) all the Ajax controls disapear from the page.
One more thing I noticed, when the ASP.NET ver. on control panel is set to "2.0 Integrated pipeline" (3.5) and I execute the following -
