You still have the same amount of RAM, so you cache the same amount of data. I don't think you gain much here. On the other side, maintenance procedures (compaction, repair) may hit your 2CPU box. I wouldn't do it.
Thank you, Andrey On Wed, Aug 7, 2013 at 10:24 AM, Paul Ingalls <paulinga...@gmail.com> wrote: > Quick question about systems architecture. > > Would it be better to run 5 nodes with 7GB RAM and 4CPU's or 10 nodes with > 3.5GB RAM and 2CPUS? > > I'm currently running the former, but am considering the latter. My goal > would be to improve overall performance by spreading the IO across more > disks. My currently cluster has low CPU utilization but does spend a good > amount of time in iowait. Would moving to more smaller nodes help with > that? Or would I run into trouble with the smaller ram and cpu? > > Thanks! > > Paul
