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From Andrey Ilinykh <ailin...@gmail.com>
Subject Re: lots of small nodes vs fewer big nodes
Date Wed, 07 Aug 2013 17:44:40 GMT
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 <paulingalls@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

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