Re: [xml] xmllint --postvalid much slower than --valid

[Daniel Veillard <veillard redhat com>]

On Sun, Feb 22, 2004 at 06:29:36PM +0100, Petr Pajas wrote:
> Hi Daniel, All,
>
> this may or may not be related to the recent problem with slow DTD-validation 
> of large documents with many ID/IDREFs 
> (http://mail.gnome.org/archives/xml/2004-February/msg00239.html).
>
> The problem is, that running xmllint --valid on my document now takes about 5s 
> which is quite perfect, but running xmllint --postvalid still takes about 
> 1m30s. So either the previous fix applies only to --valid and doesn't cover 
> --postvalid (which I don't believe) or there is some similar issue, regarding 
> just --postvalid and not --valid.  Skeletons of my documents are the same as 
> before and can be found at http://pajas.matfyz.cz/dtdvalid-test.zip.

  Can you bugzilla this ? BTW, only --valid really mean DTD validation in the
sense of the definition in the XML REC. Also I think I did make my patch 
when testing with your data when using --dtdvalid (as your files were not
having a DOCTYPE, if I remember correctly --postvalid would not work).

> While trying to provide more information or even better to find the 
> problematic spot, I recompiled libxml2 with -pg and ran gprof on xmllint but 
> apparently I don't know how to use the tool correctly because I only got some 
> useless information about a few calls within xmllint but no info at all about 
> what's going on in libxml2 itself. How do I profile libxml2.so? (Do I have to 
> recompile xmllint to link libxml2 statically?)

  yes. best is to relink statically for profiling with gprof. Please
double check you're really using the new shared libraries and if problem
persists, then bugzilla.

Daniel

-- 
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