[Neo4j] strange performance

2010-11-16 Thread Martin Grimmer
Hello, currently we evaluate Neo4j for one of our projects. Our tests showed some strange behaviour to us: ... at query 941/1000 (0,009410) with 1809 mb in 0,30 seconds - avg: 0,308696 - max: 54,533000 at query 942/1000 (0,009420) with 1809 mb in 0,069000 seconds -

Re: [Neo4j] strange performance

2010-11-16 Thread Martin Neumann
Hey, Is it the exact same query? If not, it would be interesting to know how many Relations and Nodes have been traversed. Depending on graph topology this can differ a lot. cheers Martin Neumann On Tue, Nov 16, 2010 at 10:46 AM, Martin Grimmer martin.grim...@unister.dewrote: Hello,

Re: [Neo4j] [SPAM] strange performance

2010-11-16 Thread Rick Bullotta
My first guess with that big a difference would be a bug in the calculation/output of the benchmark timing! -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Martin Grimmer Sent: Tuesday, November 16, 2010 4:47 AM To:

Re: [Neo4j] [SPAM] strange performance

2010-11-16 Thread Andreas Kollegger
It's possible that you're seeing a GC spike. Would you mind adding GC monitoring[1] to your output to see if that is related? Best, Andreas [1] http://www.oracle.com/technetwork/java/gc-tuning-5-138395.html#0.0.0.Measurement%7Coutline On Nov 16, 2010, at 8:09 PM, Rick Bullotta wrote: My

Re: [Neo4j] [SPAM] strange performance

2010-11-16 Thread Mattias Persson
Do you have some nodes in your dataset which has loads of relationships? Because if that's the case then the slow query could possible hit one or more of those heavy nodes. Also are you using breadth first traversal from one direction or from both directions (both directions being much more

Re: [Neo4j] [SPAM] Re: [SPAM] strange performance

2010-11-16 Thread Rick Bullotta
I was thinking the same thing, but 60 seconds is an awfully long garbage collection cycle... -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Andreas Kollegger Sent: Tuesday, November 16, 2010 2:15 PM To: Neo4j user discussions

[Neo4j] Hello list

2010-11-16 Thread Jose Angel Inda Herrera
Andrea Taylor sorry by my english, realy is bad. My quetion is, What is the data model that use neo4j or your specification. thanks you very much. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user

Re: [Neo4j] Hello list

2010-11-16 Thread Max De Marzi Jr.
Jose, Cual es tu pregunta en espa~nol? Yo puedo traducir por ti. Parece que estas preguntado cual es el modelo que neo4j usa, pero no entendemos a lo que te refieres. El modelo es cualquier cosa que puedes modelar con simple puntos y relaciones. Los puntos pueden ser de cualqier forma (con