Yes, I'm running embedded. On Tue, Feb 1, 2011 at 1:38 PM, Michael Hunger < michael.hun...@neotechnology.com> wrote:
> I assume Pablo is running embedded. > > Is that correct? > > Michael > > Am 01.02.2011 um 13:21 schrieb Peter Neubauer: > > > Also, > > have you taken a look at the returned document? Transferring thousands > > of relationships and parsing them as JSON on both client and server > > might not be optimal. > > > > Cheers, > > > > /peter neubauer > > > > GTalk: neubauer.peter > > Skype peter.neubauer > > Phone +46 704 106975 > > LinkedIn http://www.linkedin.com/in/neubauer > > Twitter http://twitter.com/peterneubauer > > > > http://www.neo4j.org - Your high performance graph > database. > > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. > > > > > > > > On Tue, Feb 1, 2011 at 1:17 PM, Michael Hunger > > <michael.hun...@neotechnology.com> wrote: > >> It sounds as if you are looping through all of them? Have they all the > same relationshiptype and direction? > >> > >> Otherwise perhaps use node.getRelationships(type, direction) > >> > >> Perhaps you can also use a traverser for accessing the relationship? > >> > >> Cheers > >> > >> Michael > >> > >> Am 01.02.2011 um 12:37 schrieb Mattias Persson: > >> > >>> 2011/2/1 Pablo Pareja <ppar...@era7.com> > >>> > >>>> Hi all, > >>>> > >>>> I'm working on a project with millions of nodes and relationships and > I'm > >>>> using Neo4j for it. > >>>> I'm doing some tests and I'm surprised of how slow it gets when it > comes to > >>>> getting specific relationships > >>>> from one node... > >>>> > >>>> How's it actually implemented? > >>>> > >>>> The node I want to get the relationships from is indexed so getting > there > >>>> is > >>>> almost instantaneous, however > >>>> looping over its outgoing relationships seems to be really slow. > >>>> In the last test I just did it took about 10 minutes for retrieving > around > >>>> 45.000 outgoing relationships. > >>>> > >>> > >>> What kind of heap settings and memory mapping configuration are you > using? > >>> This sounds like disk swapping IMHO. 45000 relationships are quite few > and > >>> should take well below a second to get. But if you just want to get a > >>> specific relationship (based on a property value or other node or > something > >>> similar) then indexing would be a faster solution. Maybe something like > >>> this: > >>> > >>> RelationshipIndex index = graphDb.index().forRelationships( > >>> "my-relationships" ); > >>> ... > >>> Relationship myRelationship = myNode.createRelationship( myOtherNode, > >>> myRelationshipType ); > >>> index.add( myRelationship, "myKey", "myValue" ); > >>> ... > >>> Relationship relForMyKey = index.get( "myKey", "myValue" > ).getSingle(); > >>> for ( Relationships relBetweenMyNodes : index.get( null, null, myNode, > >>> myOtherNode ) ) { > >>> System.out.println( "Relationship " + relBetweenMyNodes + " > found" ); > >>> } > >>> > >>> Does that help you? > >>> > >>> > >>>> I've also been checking the wiki site for the Index Framework and > there's > >>>> only one small paragraph talking about > >>>> indexing relationships but not about how to create them > >>>> > >>>> RelationshipIndex friendships = graphDb.index().forRelationships( > >>>> "friendships" ); > >>>> // "type" isn't a reserved key and isn't indexed automatically > >>>> Relationship relationship = friendships.get( "type", "knows", > morpheus, > >>>> trinity ).getSingle(); > >>>> > >>> > >>> I'll try to update the wiki page with a little more/better information! > >>> > >>>> > >>>> > >>>> so do you have any idea of the proper way for indexing relationships? > >>>> Thanks in advance, > >>>> _______________________________________________ > >>>> Neo4j mailing list > >>>> User@lists.neo4j.org > >>>> https://lists.neo4j.org/mailman/listinfo/user > >>>> > >>> > >>> > >>> > >>> -- > >>> Mattias Persson, [matt...@neotechnology.com] > >>> Hacker, Neo Technology > >>> www.neotechnology.com > >>> _______________________________________________ > >>> Neo4j mailing list > >>> User@lists.neo4j.org > >>> https://lists.neo4j.org/mailman/listinfo/user > >> > >> _______________________________________________ > >> Neo4j mailing list > >> User@lists.neo4j.org > >> https://lists.neo4j.org/mailman/listinfo/user > >> > > _______________________________________________ > > Neo4j mailing list > > User@lists.neo4j.org > > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Pablo Pareja Tobes LinkedIn http://www.linkedin.com/in/pabloparejatobes Twitter http://www.twitter.com/pablopareja http://www.ohnosequences.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
