Hi Hugh. I had changed the virtuoso.ini vector parameters in the past due to working with large datasets. One of these changes could have caused the problem. However, I can not confidently say which. I have changed the parameters you suggested, however, still I cannot get an answer to the graphs query in a reasonable time.
I am using Virtuoso Version: 07.20.3214 Build: Oct 14 2015, on Ubuntu 14.04 and the number of the graphs is not large (maybe 15 or 20). Kind regards, Pantelis Natsiavas 2016-09-08 4:54 GMT+03:00 Hugh Williams <hwilli...@openlinksw.com>: > Hi Pantelis, > > What is the version of the binary being run ie 07.20.3217 or other build > id and how many graphs are in the database ? > > I have seen such issues with older Virtuoso binaries, which has been > resolved by adding the following to the “[Parameters]” of the INI file: > > VectorSize = 1000 > AdjustVectorSize = 0 > > 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 7 Sep 2016, at 10:25, Pantelis Natsiavas <natsia...@gmail.com> wrote: > > > > Hi everybody. > > > > When I try to list the graphs in my virtuoso instance, I get a huge > delay, and finally a timeout. > > > > This happens for the last two weeks or so, without any obvious reason. > The delay occurs when I try it through the conductor web UI (Tab "Linked > Data" -> Tab "Graphs" -> Tab "Graphs"). I have tried retrieving the graphs > through the isql-v > > > > SPARQL SELECT distinct ?graph WHERE { GRAPH ?graph { ?s ?p ?o } }; > > > > and it is also very slow. > > > > Please note that SPARQL queries are answered normally, without any > obvious delays. > > > > Do you have any kind of suggestions? Should I fear having my triple > store in some kind of corrupted state? > > > > Best regards, > > Pantelis Natsiavas > > ------------------------------------------------------------ > ------------------ > > _______________________________________________ > > Virtuoso-users mailing list > > Virtuoso-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/virtuoso-users > >
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