Slow Page_Render time with RadGrid in IIS 7

[AdGooroo]

Hello,

We are using the Telerik radgrid controls in our app and have had very good results in an ASP.NET/IIS6 environment. However, we've just migrated to IIS7 and pages with this control are now taking 21 seconds (consistently) to complete the page.render event. We've narrowed the problem down specifically to this control and have ruled out anything related to page logic, such as database calls etc. The same pages work fine in a local environment and on IIS 6.

Are there any known issues with using RadGrid in IIS 7? Is there some way to trace the logic of the control in the page.render() method?

Thanks!

[AdGooroo]

Also, we just reinstalled using the latest version of Telerik.Web.UI.dll and there was no difference. We installed the demo site, and while we can't run most of them (we can't run them against a database), the simple client-side population demo loads really fast.

Is it possible that there is some kind of issue with our web.config?

Here's how the last part of our trace looks:

Category   Message     From First(s)              From Last(s)
===============================================
Chart    End chart control rendering.    2.0961733264982    0.046543
Page_Render    report.aspx    23.1065939944881    21.010421
Page_Render    report.aspx    23.10669896593    0.000105
aspx.page    End Render    23.1067810294325    0.000082

[AdGooroo]

Problem solved.

[bad nick]

how? (if u don't mind me asking)

[Peterson]

We are just now upgrading machines to II7 and we are seeing the same thing.  How did you resolve the issue?

Thanks!

[Pavlina]

Hi Tyson,

Could you please ensure that you have not enabled debug mode in your web config file?

Best wishes,
Pavlina
the Telerik team

[TonyG]

For anyone searching the forum, a similar and more helpful thread is here.

[Peterson]

Pavlina,

We do not have debug="true" in the web.config.  It's possible we have a DLL or two that are still compiled with the debug checks in them, but again, this is ONLY on Windows 2008/IIS7.

Is there some setting or experience you guys have had with debug code on IIS7?

TonyG, thanks for the link.  That thread deals more with the slowness of browser loading the served page.  This issue is that it takes 21 seconds to even send the page to the browser.

[Pavlina]

Hello Tyson,

Tips on how to optimize the RadGrid performance using different techniques can be found in the online resources linked below:

http://www.telerik.com/help/aspnet-ajax/gridoverview.html (Chapter "Performance tips and tricks")
http://www.telerik.com/products/aspnet-ajax/resources/top-performance.aspx
http://www.telerik.com/support/aspnet-ajax.aspx (Section "Performance")

Kind regards,
Pavlina
the Telerik team