问题
I'm using Neo4j server. I'm running into an issue where the loads are relatively low. However, the response times are quite high. I think that the number of threads servicing requests is simply too small. Is there a way to adjust the size of the thread pool for servicing HTTP requests. Is that possible?
回答1:
It's a common misconception that more threads equals more performance. In reality it's often the other way around -- more threads equals lesser performance. I don't know how your graph or requests look though so it may not apply in your case.
But you can control that pool size with the property:
org.neo4j.server.webserver.maxthreads
in conf/neo4j-server.properties
回答2:
Have you done any work to optimize your queries? Added indexes, etc.?
Are you on the latest release (2.2.1)? I found that the performance enhancements in this newest release as they relate to my application to be significant.
回答3:
It's very important to profile your queries in neo4j as a starting point, especially if you are finding that some queries are getting a slow response while others do not. Changes in the query structure can make a huge difference in performance. If you are new to neo4j I suggest you look at this post from Wes Freeman explaining why some queries are slow and what you can do about it: Pragmatic Cypher Optimization
来源：https://stackoverflow.com/questions/9934463/neo4j-configuration