Hi, Dario. I suspect we might be seeing some of the same issues, in an environment where we are simultaneously writing a steady stream of data into neo while also attempting to query it back out. The very nature of our graph design requires that there be a few "mother nodes" for various collections of entities, and I have a strong suspicion that these are the source of the synchronization issues. Do you have anything similar in your graph design? A handful of "hot spot" nodes that see a lot of other nodes/relationships being attached/detached frequently?
Rick -----Original Message----- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Dario Rexin Sent: Tuesday, April 12, 2011 12:36 PM To: Neo4j user discussions Subject: [Neo4j] Neo Server slow on frequent requests Hi all, Due to huge performance issues with some of our neo queries I profiled my calls on the neo server. The profiling shows, that up to 85% of the time the threads are waiting for other threads. I don't understand what's going on there. Hopefully someone with a deeper knowledge can help me. Am I doing something wrong, or is it normal, that most of the time the threads are blocking each other? Her is a screenshot, showing the results of my profiling: http://i.imgur.com/eIfam.jpg Thanks in advice, Dario _______________________________________________ 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
