SSRS WMI processing defaults?

We are using SSRS to report Server performance. I would like to find out how often SSRS is connecting to servers to update the Database? I cannot seem to find it.  . . Is it resource intensive is what I am trying to find out. Thank you in advance.
fstincAsked:
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ValentinoVBI ConsultantCommented:
I'm not sure what you're referring to with "updating the database".  SSRS retrieves data from databases, not the other way around.

Put simply, each time a report is requested, either manually (through Report Server or Report Manager) or automated, the dataset will be built and thus data will be retrieved from the database.

Since SQL Server 2008 R8, there's an option to use caching on shared datasets, possibly something to look into?  See http://msdn.microsoft.com/en-us/library/ee636149(v=sql.105).aspx
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fstincAuthor Commented:
Yeah, I was a bit lost. It looks like its VBscripts that are gathering information. Thanks.
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Microsoft SQL Server 2005

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