Hi Linan, These are good questions. I am currently following a similar approach to characterizing the performance of basic graph operations, and then also simple graph algorithms on various "shapes" of graphs. My initial investigation is on small graphs on my laptop, but this weekend I'm testing large graphs on Amazon instances (large, as in > 500 million nodes).
I'll post the summary of my findings from this weekend, then continue to elaborate on the operations and different server configurations. Best, Andreas On Sep 9, 2011, at 4:29 PM, Linan Wang wrote: > hi, > I once read a blog about how long it take for computation operations > such as read from L1 cache, RAM access, send packet from usa to eu, > etc. having a rough idea of the relative cost of major computation > operations, we have better control. for example, in my project i also > use property to store a cityid apart from create a relationship > between user to city, because if reading an int property is 10x faster > than getSingleRelationship + relationship.getEndNode + cityNode.getId. > > I'm wondering if could having similar list for neo4j operations. I > understand some operations could be faster than another depending on > different conditions. but let's only focus on basic read/write > operations. > > below is my guess, from fastest to slowest, feel free to correct me > and add more. > > 1, Read id of a node/relationship. > 2, Read property value of a node/relationship. > 3, Set property value of a node/relationship. > 4, Retrieve a node/relationship by id. > 5, Create a new node/relationship. > 6, Retrieve a node by external id from node index. > 7, Retrieve all relationships of a node. > 8, Retrieve a certain subset of relationships of a node from > RelationshipIndex. > 9, Retrieve a certain types of relationships of a node. > 10, Add a node to index. > 11, Add a relationship to index. > > -- > Best regards > > Linan Wang > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
