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From Mike Matrigali <mikem_...@sbcglobal.net>
Subject Re: ArrayInputStream and performance
Date Tue, 05 Dec 2006 19:23:06 GMT


Knut Anders Hatlen wrote:
> Mike Matrigali <mikem_app@sbcglobal.net> writes:
> 
> 

> 
> I have attached new files to the wiki page which show the frequency of
> each caller-callee pair. Seems like your assumption was correct, that
> most of the calls to setPosition() came from searching the B-tree.
> 
> All of the calls to setPosition() came (indirectly) from
> BasePage.fetchFromSlot(). Of the 20.7 calls to fetchFromSlot(),
> 
>   16 came from ControlRow.CompareIndexRowFromPageToKey
>   1.7 came from BranchControlRow.getChildPageAtSlot
>   1 came from B2IRowLocking3.lockRowOnPage
>   1 came from BTreeForwardScan.fetchRows
>   1 came from GenericConglomerateController.fetch
> 
> All but the last method are B-tree related, right?

yes.
> 
> There are three levels in the B-tree in this test.
> 


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