Report Viewer Memory Leak
in [CSharp]
|
From: Raghavendra on 14 May 2010 09:52 It seems there is a bug in the report viewer control which leaks memory which using it as a local report. Here is the discussion and the possible solution - https://connect.microsoft.com/VisualStudio/feedback/details/527451/ms-report-viewer-memory-leak-any-update-fix-winforms-application?wa=wsignin1.0 J.Marsch wrote: Thank you for this, Steven, and I'm sorry for the lag in getting back to you. 05-Jul-07 Thank you for this, Steven, and I am sorry for the lag in getting back to you. I will check into the calls to Reset(), adn if we still have problems, we will be in touch with CSS. Regards Jeremy Previous Posts In This Thread: On Wednesday, June 27, 2007 10:21 AM J.Marsch wrote: how to correctly release a Reporting Services report (out of memory problem) All: I am having a problem with Microsoft Reporting Services. I am running a local report (RDLC) on ASP.Net. Running the report obviously can use a lot of memory because it must consume ADO.Net. My problem is that the report does not seem to be very good about releasing the memory. It appears that the report holds on to memory until the ASP.net session is torn down. So, if I run the report over and over, I will eventually get an Out Of Memory Exception. If I end the session, and then run the report, I can see that memory is being released. I used a memory profiler to determine what was rooting the memory: The ADO.Net datatable is held in memory by the local report. The local report appears to ultimately be held in memory because something in reporting services inserted it into the ASP.net cache. It appears that it is being released on session end. I have tried calling the dispose method on the report viewer, but that actually seems to make things worse (If I call that method directly, then the memory is not available for collection even after the session is torn down -- not surprising, I guess given that ht he help for the report viewer's dispose method indicates that it is intended to be called internally by the framework -- I just took a shot in the dark). What should I be doing to make sure that the report releases its memory gracefully after it has rendered? On Thursday, June 28, 2007 12:30 AM stchen wrote: Hi J. Hi J.Marsch, Regarding on the VS 2005 reportViewer localReport processing memory issue, I have performed some research and did found existing bug entry in our internal catelog. Actually this problem is due to some of the dynamically generated assembly not able to be unloaded at runtime. And the problem has been divided into two parts and one is fixed and another part is still not controllable by design. Here is the detailed description of the issue: ============================ By Design: The object that is taking up more and more memory is the expression host. Each time a report is compiled, we create a new expression host assembly to evaluate expressions in the report. When the security settings are such that the expression host runs in the current app domain, this assembly can never be unloaded. To prevent continuously growing memory, you have two options. 1 - don't set the security for the current app domain. The default is a separate app domain. 2 - Don't call Reset(). When you call reset, we reset all of the local processing information. If you just set a new report definition we will not recompile it, so it will use the old expression host and not need to load a new assembly into the appdomain. Fixed: I added some better handling for Dispose(). We close memory streams earlier now, but we weren't holding a reference to them so it wasn't causing a problem in this case. Also, with workaround #2 above, we were still recompiling the report. We don't do that anymore for reports loaded from the file system or embedded resource. ============================ Also, for your scenario, if the problem is still quite pressure to your application environment and need a rapid resolution, I suggest you contact the CSS for further troubleshooting to verify the problem. They'll help you perform some further thorough troubleshooting and leverage more resource on working out a solution or workaround: http://msdn.microsoft.com/subscriptions/support/default.aspx Thanks for your understanding. Sincerely, Steven Cheng Microsoft MSDN Online Support Lead ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. Note: The MSDN Managed Newsgroup support offering is for non-urgent issues where an initial response from the community or a Microsoft Support Engineer within 1 business day is acceptable. Please note that each follow up response may take approximately 2 business days as the support professional working with you may need further investigation to reach the most efficient resolution. The offering is not appropriate for situations that require urgent, real-time or phone-based interactions or complex project analysis and dump analysis issues. Issues of this nature are best handled working with a dedicated Microsoft Support Engineer by contacting Microsoft Customer Support Services (CSS) at http://msdn.microsoft.com/subscriptions/support/default.aspx. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. On Thursday, June 28, 2007 12:41 AM stchen wrote: Hi J. Hi J.Marsch, Regarding on this issue, I also found your another two threads in the other newsgroups. I have replied you in the following thread: Subject: how to correctly release a Reporting Services report (out of memory problem) Newsgroups:microsoft.public.dotnet.languages.csharp if you feel it convenient that we continue discuss in that thread, please feel free to post there. Sincerely, Steven Cheng Microsoft MSDN Online Support Lead This posting is provided "AS IS" with no warranties, and confers no rights. On Thursday, July 05, 2007 4:08 PM J.Marsch wrote: Thank you for this, Steven, and I'm sorry for the lag in getting back to you. Thank you for this, Steven, and I am sorry for the lag in getting back to you. I will check into the calls to Reset(), adn if we still have problems, we will be in touch with CSS. Regards Jeremy Submitted via EggHeadCafe - Software Developer Portal of Choice Get Silverlight 4 Installed: Tips and Tricks http://www.eggheadcafe.com/tutorials/aspnet/05910e41-3846-4db9-8e1b-f54c56a64ed9/get-silverlight-4-install.aspx
|
Pages: 1 Prev: asp.net C# calling VB dll function Next: No really - How Do You Play A Flash File in WPF |