Hi Paul, How is your bucket set up?
Note that by default, you'll have replication set to 1, so when you go from one node to two nodes, you actually increase the reliability and thus the work a bit without actually increasing net capacity. It may also be helpful if you give us a sense of the system under test and the numbers you're seeing. Note that there is a package distributed with libcouchbase<http://www.couchbase.com/communities/c/getting-started> that includes a workload generator named pillowfight. There's also a Java workload generator named RoadRunner<https://github.com/daschl/RoadRunner>. Thanks, Matt From: asdf9898 <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Thursday, January 30, 2014 4:00 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: couchbase scale out performance Hello I am new to nosql in general and would like some advice on couchbase and other similar technologies. I have done some performance testing of a number of technologies and find the same results with each. When I do x inserts on a single node I get better performance than when I add a second node. Read-performance is much better than insert performance but again a single node performs better than 2 nodes. I then thought that if I add the URIs in the buildConnection URI server = new URI(addresses); ArrayList<URI> serverList = new ArrayList<URI>(); serverList.add(server); CouchbaseClient client = new CouchbaseClient( serverList, "default", ""); In other words by explicitly telling the client about the second node it should cause double performance but sadly I just got maybe an extra 10% I then thought if I double the number of client threads because I now have two servers to target it would double performance but again no: just a slight increase. So in summary : would adding an extra node cause an increase or decrease in throughput (both reading and inserts) ? And I am getting the same behaviour using other well known nosql technologies too. Many thanks in advance. -- You received this message because you are subscribed to the Google Groups "Couchbase" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/groups/opt_out. -- Matt Ingenthron Couchbase, Inc. -- You received this message because you are subscribed to the Google Groups "Couchbase" 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/groups/opt_out.
