The advice I heard at the New York C* conference...which we follow is to use the m2.2xlarge and give it about 8 GB. The m2.4xlarge seems overkill (or at least over price).
Brian On Fri, Aug 23, 2013 at 6:12 PM, David Laube <d...@stormpath.com> wrote: > Hi All, > > We are evaluating our JVM heap size configuration on Cassandra 1.2.8 and > would like to get some feedback from the community as to what the proper > JVM heap size should be for cassandra nodes deployed on to Amazon EC2. We > are running m2.4xlarge EC2 instances (64GB RAM, 8 core, 2 x 840GB disks) > --so we will have plenty of RAM. I've already consulted the docs at > http://www.datastax.com/documentation/cassandra/1.2/mobile/cassandra/operations/ops_tune_jvm_c.html > but > would love to hear what is working or not working for you in the wild. > Since Datastax cautions against using more than 8GB, I'm wondering if it is > even advantageous to use even slightly more. > > Thanks, > -David Laube > >
