Hello Nathan, I've checked the compilation of the query and it seems the same for old and new versions, so I have no clue. I can't say anything about the speed of dbpedia.org endpoint, but it runs Virtuoso Cluster Edition that is not yet released and it has no relation to your local installation.
What about the speed of same queries but with the graph specified? BTW how many graphs does the database contain? What is the database size, number of buffers and the hardware (most important, amount of RAM)? Best Regards, Ivan Mikhailov http://virtuoso.openlinksw.com On Tue, 2010-02-09 at 22:14 +0000, Nathan wrote: > Hi, > > I'm pretty sure that the performance of in() seems to have downgraded > somewhat with the new 6.1.0.3126 release of virtuoso; I'm struggling to > run even very simple queries such as the following without them timing > out, on both my own 6.1 and dbpedia.org's instance: > > SELECT * WHERE { > ?s ?p ?o . FILTER( ?s in(<http://dbpedia.org/resource/RDFa>, > <http://dbpedia.org/resource/Semantic_Web> ) ) > } > > Pretty sure this is a new issue as I can run similar queries (all be it > on a smaller dataset) on 6.0.1-pre1.3124 without any problems, and > likewise I've tested on the bio2rdf.org sparql endpoint and performance > is nice and fast as expected. > > Regardless even if the above versioning detail is incorrect, the in() > performance definitely appears to be an issue on 6.1.1.0.3126 > > Many Regards, > > Nathan
