On 3/2/16 4:24 AM, Nolle, Andreas wrote:
>
> 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
>Andy, There are a lot of factors that could come into play here. If you haven't already done so, please provide query and result times for queries against each of the individual instances in this SPARQL-FED query. The goal would be to at least eliminate any local issues. Also shed some light on the triple count per each of these instances. Ultimately we have a network or query optimizer issue in play, we just need a productive route to determining which of these it is.. -- Regards, Kingsley Idehen Founder & CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog 1: http://kidehen.blogspot.com Personal Weblog 2: http://www.openlinksw.com/blog/~kidehen Twitter Profile: https://twitter.com/kidehen Google+ Profile: https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile: http://www.linkedin.com/in/kidehen Personal WebID: http://kingsley.idehen.net/dataspace/person/kidehen#this
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