[Fwd: Re: Optimizing XSLT iteration]

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Subject: [Fwd: Re: Optimizing XSLT iteration]
From: Abel Braaksma <abel.online@xxxxxxxxx>
Date: Mon, 08 Oct 2007 08:29:39 +0200

This got accidentally send to Sujata, here it is, again, to the list...(possibly out of date now, since the discussion has gone on)

-------- Original Message --------
Subject: 	Re:  Optimizing XSLT iteration
Date: 	Mon, 08 Oct 2007 03:48:12 +0200
From: 	Abel Braaksma <abel.online@xxxxxxxxx>
To: 	Sujata Gohad <sgohad@xxxxxxx>

Sujata Gohad wrote:

What is your expectation wrt to the time Saxon takes to transform
given the XSLT attached?

I've looked a bit at your source and I am a bit worried about its maintainability, but that's not your major point here (there are large xsl:when's that can be removed, and there are nested xsl:for-each that serve no special purpose and can be replaced by matching templates/apply-template pairs).

But my main point is the performance: it took my computer, while still doing the math thing on the background and a dozen other things, about 5 minute 43 seconds to run against your augmented (up to 68MB) source code (after I removed 5 obvious errors). That is still about 5 times faster than your measurements and your system is faster (on paper) than mine.

In lieu of this, I assume to be able to optimize your stylesheet to run in about 20 to 30 seconds with about 80MB, based on my earlier timings. But I wonder why there is so much difference between my timing and yours.

I use Saxon B 8.9.0.4 for Java. I ran it with the following command:

saxon -s sample.xml hvm_to_svg.xsl > out.xml

Do you perhaps run it from within an IDE? This may add a lot of extra timing to interpreting and showing the result document (I use Eclipse, running it within Eclipse is much-much-much slower with large documents).

Cheers,
-- Abel Braaksma

PS: it is now about 3.45 AM up here, time to call it a day ;)

Current Thread
[Fwd: Re: Optimizing XSLT iteration] Abel Braaksma - 8 Oct 2007 06:31:05 -0000 <=

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RE: Optimizing XSLT iteration, Scott Trenda	Thread	XML/XSLT for web templating, Alessandro Bologna
Re: Optimizing XSLT iteration, Sujata Gohad	Date	Re: DOE an attribute to preve, Phill
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