Re: Xalan performance
Hi Maybe you have to work on your stylesheet, too... I got one I did optimize a few times. The last version is almost 70 times faster than the first... with almost the same functionnality (from 17-18 s to 260 ms)! Regards JB ----- Original Message ----- From: Peter McEvoy <peter.mcevoy@xxxxxxxx> To: Harbaugh, Alan (FUSA) <AlanHarbaugh@xxxxxxxxxxxx> Cc: <XSL-List@xxxxxxxxxxxxxxxx> Sent: Tuesday, November 14, 2000 4:05 PM Subject: RE: Xalan performance > > Peter, > > We have a very similar situation. We are about to > > investigate using XT. Our preliminiary evaluation is that it > > is MUCH faster. We need to look into whether it has an > > API and how well it conforms to the standard. > > Alan, > Thanks for your feedback - it's kinda reassuring that others are seeing > this as an issue. Today I've actually managed to do quite a bit of research > and have investigated already: > > XT - certainly an alternative, but they freely admit that it was not built > with performance in mind. They have a Java API and it is possible to build > a servlet to use it. > > Saxon - I am currently looking at this - it really does look like it is > about 400% faster than Xalan. It has a full java API, and they even have a > sample servlet which does transforms (although the servlet needs a bit of > work to be as fully featured as DefaultApplyXSL). From initial estaimates, > I think Saxon will take about 3+ seconds to do the transform that I have. > > Sablotron - this is a C++ library which SCREAMS along. I will investigate > next how I can make JNDI calls to the librabry file and transform my files. > FYI, my 14second Xalan transform takes 0.5 seconds in this (yup, I said one > half of a second...!!!). However, they don't fully implement the XSL > standard yet. > > Translets - From Sun - will look at this. You can compile your XSL sheets > into classes and just run XML through it. They say it is 3-10 times faster > than XT. See http://www.sun.com/software/xml/developers/xsltc/article.html > > > There were also a few commercial ones as well, I'd like to exhaust my > options on the open source side and then start calling companies. These > are: > > DataPower - some XSL acceleration technology. They have some interesting > other stuff, though - worth a nosy. > > Non-runners: > > Cocoon - this just uses the Xalan jar anyway. > > I tried finding stuff on Alphaworks.ibm.com, and it seems that they too base > their XSL engine on Xalan. > > > Thanks to everone who mailed me with tips - this seems to be a hot issue.... > > Peter McEvoy > Senior Technical Analyst > IONA Technologies PLC > > > > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list > XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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