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martmuller
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Memory usage
Jul 1st, 2010 at 2:49pm
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Hi,
I have a problem using the Calendar control and the memory that the browser takes. I have the control on a page and each time I navigate to this page ieplore.exe takes about 20mb of memory to render de calendar control. Each time I navigate from this page, the Garbage Collector does not collect the object, so my application has a memory leak.

I found some articles how to deal with the GC in Silverlight, so I tried to clear all references like eventhandlers and clearing the UIElement collections when navigating from this page. I also implemented the IDisposable interface and tried to set all controls to null. After collecting the garbage the memory is not released however.

Are you familiar with this problem? Can you guide me to a solution or workaround?

Thanks in advance!
Mart
  
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Meppy
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Re: Memory usage
Reply #1 - Jul 1st, 2010 at 3:10pm
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Can you try calling the GC.GetTotalMemory method and see if there is any improvement?

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Meppy
  
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martmuller
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Re: Memory usage
Reply #2 - Jul 5th, 2010 at 2:20pm
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Hi,
No improvements when calling that method. Can you reproduce the problem?

Mart
  
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Meppy
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Re: Memory usage
Reply #3 - Jul 5th, 2010 at 2:52pm
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The memory used displayed in the Task Manager does not necessary display managed memory in-use. My initial idea was to call GC.GetTotalMemory method in between page reloads and see if the returned number changes dramatically (which might be an indication of a memory leak).

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Meppy
  
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martmuller
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Re: Memory usage
Reply #4 - Jul 5th, 2010 at 3:05pm
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Ok, I will investigate the total of memory when switching pages this way. I'll let you know the results.

Mart
  
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martmuller
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Re: Memory usage
Reply #5 - Jul 6th, 2010 at 10:28am
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Ok, I've investigated the GC memory behaviour using the GC.GetTotalMemory method. When I open the page it contains 5Mb, when the page is loaded, it had 7Mb, when I navigate from the page it still has 7.

Then when I enter the page again, it increases again with 2 Mb and so on. When unregister the eventhandlers on the calendar control and when collecting the GC, the memory is not released.

I tried this in a simple page without many modifications on the control in code. I do also have a page with lots of modifications in timetablesettings, etc, which takes up a lot more memory.

It is a serieus problem in our case because our application is all about planning and activities in calendars Smiley

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Mart
  
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Meppy
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Re: Memory usage
Reply #6 - Jul 6th, 2010 at 2:10pm
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Can you try with the version below and see if there is any improvement to this issue:

https://mindfusion.eu/_pln_trial/MindFusion.Scheduling.Silverlight.2.1.1c.zip

Let me know of your observations.

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Meppy
  
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martmuller
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Re: Memory usage
Reply #7 - Jul 7th, 2010 at 1:40pm
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Hi Meppy,
This build does the trick! The GC releases the memory properly now.

We just bought a licence for the calender control. I assume this build is a trial? Can you provide me with a licenced version as well?

Thanks a lot!
Mart
  
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Meppy
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Re: Memory usage
Reply #8 - Jul 7th, 2010 at 2:03pm
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I have sent you a private message containing a link to the most recent licensed build of MindFusion.Scheduling for Silverlight.

Meppy
  
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