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From Remy Maucherat <>
Subject Re: [5.0] Xerces 2 impact on startup
Date Sun, 13 Apr 2003 09:37:57 GMT
Costin Manolache wrote:
> Remy Maucherat wrote:
>>Just an observation ...
>>When I remove Xerces 2.3 and rely on the Crimson parser integrated in my
>>new JDK (Sun 1.4.2 beta), startup time goes down 20%. Impressive
>>difference (I would have thought the later 2.x releases would improve
>>performance :-( ).
> Well, you know my position - Xerces is a great parser, but we should 
> distribute crimson ( for JDK1.3 ) and use the parser include in 1.4
> otherwise.
> It's not only speed - size also matters, plus the idea that we only need SAX
> for tomcat runtime.

Indeed, it's only 200k.

Anyone around to point out it can't do schema validation ? (which as we 
all know, is a killer feature; for performance, that is ;-) )

About the startup time, I didn't try to profile or optimize it. I'll 
continue focusing on other optimizations for now, but have to admit this 
is very important for good user experience (like JSP compilation for 


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