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Performance tips to speed up multiple transforms

Subject: Performance tips to speed up multiple transforms
From: Neil Owens <neil_owens@xxxxxxxxxxx>
Date: Fri, 5 Nov 2010 18:12:47 +0000
 Performance tips to speed up multiple transforms
Evening all

I'm transforming around 500 individual XML log files - ~250MB worth - into 4
output files.  Each log file contributes to all 4 output files.  At present,
I'm running a Saxon transform within VBScript with one XSLT file for each log
file.  It processes around 2 log files per second.  I guess it's slow 'cos I'm
shelling out to a hidden command box every time I transform a log file(open a
shell, start java, open the Saxon .jar file, run the transform, append the 4
results to the 4 'master' output files, close everything, repeat ).  It works,
but I guess it could be significantly more efficient.

What would the smart person be looking at to speed up the process?  Write the
whole script in Java?  .NET?  C++... Or just make a Transform 'do' the whole
thing?

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