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Re: [xsl] exsl:node-set in xalan


Subject: Re: [xsl] exsl:node-set in xalan
From: David Tolpin <dvd@xxxxxxxxxxxxxx>
Date: Sat, 17 Jan 2004 10:09:40 +0400 (AMT)

[ Charset ISO-8859-1 unsupported, converting... ]
> 
> Not sure this helps, but I get 12 sec for the shell script & only 
> 3.5 with the stylesheet using 3 rinses on xhtml.rng. This is 
> with Saxon 6.5.3 on RedHat with a 2.4GHz proc. Sounds like it 
> might still be something environmental rather than Saxon. 
> 

I've been able to reproduce the result for xhtml with JDK 1.4.1/HotSpot (the
original results where with 1.3.1_08/OpenJIT, which launches faster and runs
slower), but it does not change the trend. While the relatively small xhtml
(which is a toy for the application) is faster, the larger TEI or DocBook are
still much slower. With JDK 1.4.1/HotSpot, the stylesheet version is 
    3 times faster than the script version for Xhmtl, 80Kb, 
but 2.5 times slower with DocBook, which is 900Kb.

In practice, stylesheets can be larger than DocBook in the example (docbook
with MathML and SVG, for example). But whether a stylesheet is large or small,
why the dependency is so steep in both SAXON and jd.xslt?

This behaviour is also exhibited by jd.xslt, but not by Xalan. 
Xalan consistenly runs the stylesheet version faster on any data with exsl
stylesheet than with the script.

David Tolpin
http://davidashen.net/

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