[eXist-TEIXML] Large tables

[Peter W. <pet...@ke...>]

Hi

I'm not sure where I should pose this question, but here goes.  I'm 
producing cross-tabulation data from an XML TEI database using eXist 2.0 
tech preview version 15855.  Using XQuery I produce data in the the form 
of .gml files for use in external programs such as nodeXL and matrix 
explorer.  The data is in the form of nodes and edges/tuples for 
production of graphs.  I can take this data and transform the 
edges/tuples directly into tables using XQuery and simpe html.  These 
tables are  effectively  matrices say 25 x 100. My problem is that the 
process is quite slow computationally. Looking at the query profiler 
quite a lot of the time is spent making calls to the index for what are 
interim variables where no index is available.  My question is where to 
look for information that will help me improve my code/approach or take 
any other measure that would speed up the process.  I don't have a sense 
as to how large a computation this is in terms of XQuery/eXist.  Does 
anyone have experience they could share?

Best wishes

Peter