How many rels are returned from the call? Do you close the hits afterwards to release resources?
Sent from mobile device Am 04.07.2014 um 10:51 schrieb ashish jindal <[email protected]>: > Hi, > I am relatively new to neo4j. I have implemented a traversal algorithm using > neo4j as underlying graph storage. > Graph has about 40K nodes and about 2M edges. > Using 2.1.2 community version of neo4j embedded. It is hosted as service in > tomcat7 with allocated 6Gb of memory on 14.04 Ubuntu. > Following is a piece of code which does numeric index queries. > RelationshipIndex numericIndex = > graphDb.index().forRelationships(Constants.RELATIONSHIP_INDEX); > public Relationship getRelationship(Node n, int lowerlimit, int > upperlimit) throws Exception { > > long t1 = System.currentTimeMillis(); > IndexHits<Relationship> hits = > numericIndex.query(QueryContext.numericRange("start_time", lowerlimit, > upperlimit, true, true), n, null); > long t2 = System.currentTimeMillis(); > time_spent_in_numeric_index_queries += t2-t1; > // global variable > // do something on hits and return a relationship > from it > } > > for a single threaded traversal time_spent_in_numeric_index_queries ~= 1 sec. > but if i do multiple traversals ( same traversal ) in parallel , > time_spent_in_numeric_index_queries increases linearly . for 10 calls in > parallel it takes ~= 5 sec. > Also, i am only doing read operations throughout . > I want to know, how does querying work? Does it each query lock the entire > index? > > > Thanks, > Ashish > > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
