Hi Andreas, The rdf/xml is just sparql describe , whereas html page render all labels as well and thus has more data to retrieve. There is also a recent fix in Virtuoso to speed to loading of labels and html text with the /describe page, but is not in the open source archive but will be soon.
Best Regards Hugh Williams Professional Services OpenLink Software, Inc. // http://www.openlinksw.com/ Weblog -- http://www.openlinksw.com/blogs/ LinkedIn -- http://www.linkedin.com/company/openlink-software/ Twitter -- http://twitter.com/OpenLink Google+ -- http://plus.google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers On 1 Oct 2013, at 16:08, Andres Garcia <hgar...@fi.upm.es> wrote: > Hi all, > > The http://myserver/describe/?url=resource service is very slow when > expecting a text/html answer. However the same request and expecting an > application/rdf+xml document is very fast. > > For instance, the following request takes more than 1 minute > > time curl -i -L -H "Accept: text/html" > http://localhost:8890/describe/?url=http://dbpedia.org/resource/Madrid > > while the next request takes only 5 seconds > > time curl -i -L -H "Accept: application/rdf+xml" > http://localhost:8890/describe/?url=http://dbpedia.org/resource/Madrid > > This makes me think that the problem is in the configuration of the http > server or in the service transforming the rdf data into html. However I have > no clue about which parameters should be modified. > > Does anyone know how I can solve this issue? > > Setup: Virtuoso 7, Linux - ubuntu (virtual machine with 9GB ram and 8 cpus, > virtuoso buffers defined according to the ram size), around 75 million > triples, fct vad installed. > > > > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk_______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtuoso-users
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------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134791&iu=/4140/ostg.clktrk
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