Hi Markus,
I doubt that that's the issue - I just ran Special:RDFExport on
discoursedb.org and saw the same issue, of RDF being generated for pages
that the relevant page points to; and the same problem happened even when I
commented out the hook that SMW uses.
Laurent or Markus - feel free to try it out yourselves: the relevant line is
the wfRunHooks() call on line 635 of /includes/export/SMW_OWLExport.php.
-Yaron
On Mon, Jun 28, 2010 at 3:55 AM, Markus Krötzsch <
mar...@semantic-mediawiki.org> wrote:
> On Sonntag, 27. Juni 2010, Jeroen De Dauw wrote:
> > Hey,
> >
> > Just a guess, but this might be caused by the changes Yaron made for
> > allowing SIO to hook into the RDF export.
>
> That might be an explanation; at least I do not recall any other changes
> that
> were made to the export besides some internal renaming. Yaron, would it be
> possible that your changes have such a huge negative effect on SMW
> performance?
>
> Also, I checked and could not find a problem with the recursive export
> settings. I also observe the problem on other sites now: PHP resource
> consumption is much higher than usual, and often the RDF export just fails.
>
> As a quick fix, I note that it is possible to return to SMW 1.5.0 at any
> time.
> Of course, one has to be sure that extensions are also happy with this
> (especially Semantic Maps has some dependencies on SMW 1.5.1).
>
> Markus
>
> >
> > On 27 June 2010 18:58, Laurent Alquier <laur...@alquier.org> wrote:
> > > I turned off recursive export and backlink export at the end of my
> > > LocalSettings.php file and the RDF export remains just as big.
> > >
> > > - Laurent
> > >
> > > On Jun 27, 2010, at 9:34 AM, Markus Krötzsch wrote:
> > > > On Sonntag, 27. Juni 2010, Laurent Alquier wrote:
> > > >> I set my PHP timeout limit to a very high value and let the RDF
> export
> > >
> > > run
> > >
> > > >> its course.
> > > >>
> > > >> The file was eventually generated, apparently without error.
> > > >>
> > > >> The RDF export contains what I expected to see - a list of
> properties
> > >
> > > for
> > >
> > > >> that one page.
> > > >>
> > > >> It also contains things I did not expect in that file - every pages
> > > >> that this page links to is also included in the file, along with
> their
> > > >> own properties.
> > > >>
> > > >> Is that how the RDF export is supposed to be ?
> > > >
> > > > This behaviour should normally be configurable and be disabled by
> > >
> > > default.
> > >
> > > > Maybe some change in SMW 1.5.1 affected the according setting or the
> > >
> > > place
> > >
> > > > where it is taken into account. Maybe you can check if the settings
> at
> > >
> > > [1]
> > >
> > > > need to be changed on your site.
> > > >
> > > > -- Markus
> > > >
> > > > [1]
> > >
> > > http://semantic-mediawiki.org/wiki/Help:Configuration#OWL.2FRDF_export
> > >
> > > >> On Jun 24, 2010, at 7:31 PM, Laurent Alquier wrote:
> > > >>> Hi all
> > > >>>
> > > >>> Has anyone experienced poor performance on RDF exports since the
> > >
> > > upgrade
> > >
> > > >>> to 1.5.1 ?
> > > >>>
> > > >>> Most of my pages flat out time out on the Special:ExportRDF page,
> > > >>> even after bumping up PHP timeouts to 240 seconds.
> > > >>>
> > > >>> On pages that do come out (pages with only a handful of properties
> > > >>> declared... as in less than 5) the RDF file seems to contain more
> > >
> > > details
> > >
> > > >>> than I remember. In particular, I don't remember seeing that many
> > >
> > > details
> > >
> > > >>> about pages linked to from the current page.
> > > >>>
> > > >>> Can someone familiar with the internals of the RDF export double
> > > >>> check that things are ok ?
> > > >>>
> > > >>> I don't have a very high number of properties or properties values
> > > >>> compared to some other SMW instances I know of. I didn't notice any
> > >
> > > slow
> > >
> > > >>> down in SMW queries either, and Special:Browse is very responsive.
> > > >>>
> > > >>> The problem seems to be contained to ExportRDF so far.
> > > >
> > > > --
> > > > Markus Krötzsch <mar...@semantic-mediawiki.org>
> > > > * Personal page: http://korrekt.org
> > > > * Semantic MediaWiki: http://semantic-mediawiki.org
> > > > * Semantic Web textbook: http://semantic-web-book.org
> > > > --
> > >
> > >
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>
> --
> Markus Krötzsch <mar...@semantic-mediawiki.org>
> * Personal page: http://korrekt.org
> * Semantic MediaWiki: http://semantic-mediawiki.org
> * Semantic Web textbook: http://semantic-web-book.org
> --
>
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