Thank you for your question. I assume you have 64bit Windows. For large applications I don't recommend using JustTrace addin for Visual Studio because devenv.exe process is 32bit so I would suggest using the stand-alone JustTrace application (it will start as 64bit process on 64bit Windows). I guess JustTrace will need a lot of memory to collect a snapshot of 10GB process, but it should be possible.
Right now we are working on an alternative approach for collecting snapshots which will allows JustTrace to work better in scenarios like yours. We expect to ship this new feature for 2012 Q2 release. Meanwhile, you can try our latest internal build. Please find the attached files (unfortunately I had to split the file as the maximum file size is 20MB, sorry for the inconvenience).
All the best,
the Telerik team
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