Hi Hugh,
this was also my first guess, but the network is not the problem. This is
definitively the case because I’ve evaluated again q2
SELECT ?x ?b
WHERE {
SERVICE <http://141.87.4.8:8891/sparql> {
?x <http://swrc.ontoware.org/ontology#pages> ?b .
} .
}
at Virtuoso instance running at port 8895 and SHUTDOWN the Virtuoso instance
running at port 8891 after 5 minutes.
The query evaluation hat still proceed and ended after more than one hour with
the same number of results (313421).
At that it doesn’t matter if the query is executed via isql or via the SPARQL
interface (locally AND remote).
So for me it seems like a bug, because the Virtuoso at 8895 takes one hour
despite the fact that no additional join or any other operation has to be done.
Best
Andy
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