Debugging Silverlight applications with windbg and sos.dll

send flowers » Debugging Silverlight applications with windbg and sos.dll

send flowers » Debugging Silverlight applications with windbg and sos.dll — Thu, 21 Aug 2008 13:31:01 GMT

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Visual Studio Links #67

Visual Studio Hacks — Thu, 21 Aug 2008 17:36:14 GMT

My latest in a series of the weekly, or more often, summary of interesting links I come across related to Visual Studio. The Web Developer Tools Team announced the release of the Dynamic Data Wizard Preview 0806 for VS 2008 SP1 . US ISV Developer Evangelism

re: Debugging Silverlight applications with windbg and sos.dll

Peter McGrattan — Fri, 22 Aug 2008 02:40:56 GMT

Great post Tess: concise and informative.

I'd be most interested in any real world Silverlight problems you've solved/investigated 'using the powers of the debugger' in the future.

Thanks,

Peter

Link Listing - August 21, 2008

Christopher Steen — Fri, 22 Aug 2008 14:48:19 GMT

Link Listing - August 21, 2008

Post: 170

Mirrored Blogs — Mon, 25 Aug 2008 01:33:48 GMT

Post: Approved at: Aug-24-2008 Intersoft demos Silverlight 2 controls http://www.sdtimes.com/INTERSOFT_DEMOS_SILVERLIGHT_2_CONTROLS

Debugging Silverlight with SOS.dll

CLR - a little bit of everything — Tue, 26 Aug 2008 01:15:32 GMT

Tess just posted an article on how to debug Silverlight application using sos.dll. If you have been using

Interesting Finds: 2008.08.22~2008.08.26

gOODiDEA — Tue, 26 Aug 2008 06:06:48 GMT

DebugDebuggingSilverlightapplicationswithwindbgandsos.dllWebJavaScriptMemoryLeakDetec...

Interesting Finds: 2008.08.22~2008.08.26

gOODiDEA.NET — Tue, 26 Aug 2008 06:07:36 GMT

Debug Debugging Silverlight applications with windbg and sos.dll Web JavaScript Memory Leak Detector

Debugging hangs, memory leaks or exceptions in silverlight apps with sos

If broken it is, fix it you should — Tue, 21 Oct 2008 17:18:15 GMT

Back in August I wrote a post about how to debug these types of issues in silverlight applications. 

Silverlight 2.0 RTW = Production Debugging Silverlight 2.0 Apps

Adlai Maschiach — Wed, 22 Oct 2008 09:24:08 GMT

Silverlight 2.0 RTW = Production Debugging Silverlight 2.0 Apps Ok, so we all know that Silverlight 2

re: Debugging Silverlight applications with windbg and sos.dll

Marc Sherman — Thu, 23 Oct 2008 18:02:54 GMT

What if some non-Silverlight component that used mscorwks.dll (a regular .NET component) was loaded into IE? And then a Silverlight app was loaded. Would both mscorwks.dll and coreclr.dll be loaded in the IE process? If so, I guess you could load both versions of sos when looking at a dump (since they have different paths). Is any of this possible?

thanks,

Marc

re: Debugging Silverlight applications with windbg and sos.dll

Tess — Thu, 23 Oct 2008 18:12:55 GMT

Yes, all of the above is possible...

In that case you might have to prefix the command with the path !<path>/sos.command to get the command from the right sos loaded or alternatively unload one sos and load the other to avoid confusion about where the commands come from...

if a command is present in multiple loaded extensions, the extension that is last loaded will have presedence (see .chain for loading order and full name of the extensions)

re: Debugging Silverlight applications with windbg and sos.dll

Doug — Thu, 23 Oct 2008 18:49:08 GMT

Is this supposed to work by directly attaching to the iexplore.exe process or does it only work by taking a dump? I've some huge memory leaks with my SL2 app (~50 MBs in one transaction) on the client side. I'm trying to investigate the culprit for this.

Thank you.

Interesting Finds: 2008.10.19~2008.10.23

gOODiDEA.NET — Fri, 24 Oct 2008 03:12:31 GMT

.NET ASP.NET MVC Beta Source Code Release - Partial Output Caching in ASP.NET MVC - Partial Requests

re: Debugging Silverlight applications with windbg and sos.dll

Tess — Fri, 24 Oct 2008 09:20:05 GMT

Doug, you can attach live or take a dump, either one will work.

The reasons for takig a dump would be

a) to be able to look at it on a different machine

b) to be able to continue working with the process while you are debugging

c) to save it if you want to refer back to it

but there is no difference between what you will see live or in a dump for this purpose...

Sobre el porqué recomienda la documentación el uso de 1 en vez de 0 en Thread.Sleep(1) para Silverlight

El blog de Marino Posadas — Tue, 14 Apr 2009 10:34:45 GMT

Hola Iba a poner esto como respuesta al artículo de Octavio sobre "Qué problema tiene

re: Debugging Silverlight applications with windbg and sos.dll

Scott — Mon, 22 Jun 2009 10:30:33 GMT

Tess,

THANK YOU!

This, combined with a number of other posts on your blog, helped me to identify and resolve a nasty memory leak in a Silverlight 2 photo gallery available on CodePlex called Slide.Show 2.

If you're curious, here's some of the details...

http://slideshow2.codeplex.com/Thread/View.aspx?ThreadId=60173

You are a debugging goddess. I stand in awe. Thanks for imparting a little of your wisdom to the rest of us.

re: Debugging Silverlight applications with windbg and sos.dll

deano — Mon, 03 Aug 2009 13:57:24 GMT

Hi Tess,

Thanks for the helpful articles. I am finding them very useful.

I am currently developing a silverlight app that gets live updates from a TCP publishing server. When to works the application runs very well but i think i have either a network threading problem or UI update exception because I can get some very random exceptions. Typically the output (with no callstack) is:

System.ExecutionEngineException was unhandled

Message: An unhandled exception of type 'System.ExecutionEngineException' occurred in Unknown Module.

I also sometime get a NullReferenceException with a stacktrace as follows:

StackTrace " at System.Threading.Overlapped.get_UserCallback() at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)"

I would appreciate it if you could suggest any tools or methodologies for silverlight that would help diagnose what is casuing these issues.

Thanks very much

Deano

re: Debugging Silverlight applications with windbg and sos.dll

Aashish Gupta — Fri, 09 Oct 2009 15:03:16 GMT

Hi Tess,

I am getting this error while using the SOS.dll in Silverlight 3

SOS not available while Managed only debugging. To load SOS, enable unmanaged debugging in your project properties.

I have looked on the net for this error all the solutions there are for windows applciations and there is no solution to tell how to enable unmanged debugging in Silverlight or Web applictions so could you please help me in finding that option.

In windows application it comes when you do a right click on your solution and then click porperties and then debug

and then enable unmanged debugging.

Thanks

Aashish Gupta

re: Debugging Silverlight applications with windbg and sos.dll

Tess — Fri, 09 Oct 2009 16:07:58 GMT

If you are talking about sos in visual studio then I dont think you can set this for silverlight or asp.net apps (might be wrong) but you can debug by attaching to a process in visual studio and then you can choose what you want to debug (managed, native etc.)