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How to debug NT services for CPU spikes?

Posted on 2009-05-08
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Looking for some guidelines for troubleshooting CPU spikes caused by NT services. I've created the dumps on the service in question, using DebugDiag but reading dump using WinDbg tool does not appear to be an easy task. I need to get to the source level and see where the spike is orginating from. I do not have access to source code of that service.  There is vast information on the net but looking for a right direction ... Thanks for your help in advance
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Question by:ExcUsr2008
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by:jkr
ID: 24342969
>>I need to get to the source level and see where the spike is orginating from.
>>I do not have access to source code of that service.

Sorry, but these two points contradict each other. You cannot get to a source level if you don't have the source or at least teh sympol information files.
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by:ExcUsr2008
ID: 24346633
If i download the symbols from http://msdl.microsoft.com/download/symbols, would that work? Thanks for your response.  
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by:jkr
ID: 24349731
Hm, what kind of service is that? If it is not from MS, then the answer is "No".
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by:ExcUsr2008
ID: 24349752
Like i mentioned in my question, it is a NT Service, developed using .net framework (not sure of the version), thanks.
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jkr earned 1500 total points
ID: 24350039
Well, usually MS has only symbol files for services created by MS. So if that is not the case and the vedor refuses to provide these files to you, it is quite unlikely that you can get down to the source level. It will be possible for you to tell what Windows APIs are called during these spikes, but...
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