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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...System out of MemorySystem out of Memory
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10/26/2009 3:24 PM
 
Derek Harding


Joined: 9/10/2009
Posts: 3

Hi All,

I have DNN 4.9 with custom modules installed.  This website reads an XML file from the portal home directory (1 file per portal).  Everything was working fine until another portal (totalling 3) was created.  The size of the XML file is about 40MB+ and is read on almost every page on the website, creating a session variable for the user if one does not exist.

The DNN framework started crashing, providing an error of "Exception of type 'System.OutOfMemoryException' was thrown", tracing the error back to the function that would read that XML file.  This crash would stop the website from responding... to get the framework running again I would need to stop the IIS app pool and forcing the DNN to re-compile (sometimes it seems harder to get it running again).

I have been able to avoid this error (I think) by restarting the framework or RDC and ending the "w3wp.exe" from the task manager every two days or so.

Does anyone have a solution/suggestion to my situation? Is there a better way to read the XML files into memory?  Any suggestions are welcome

 

Regards,
-Derek
 
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10/26/2009 7:48 PM
 
Chris Onyak


www.OnyakTech.com
Joined: 8/27/2003
Posts: 799
Do you really need to read the entire 40mb file?  If you must, then another option would be to convert the XML file into a binary file.  That should reduce the file size by 80% or more.  When a page is called, just load the binary into an object graph of your class collections and then load those collections into a data controls (grids, listbox, etc).  But the best option would be to limit the amount of data that is required at one time and use ajax to partially load the data as needed.
 
Also... the Application Pool in IIS can be set to recycle the site if memory reaches a specific point.  That will at least automate the restarts for you.

Professional DNN Extensions, custom solutions and mobile apps since 2003.
www.OnyakTech.com
 
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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...System out of MemorySystem out of Memory


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