I don't know that I would want to run a production site with Magento and 
Drupal with less than 4gb of ram. The cores = more visitors concurrently 
to your website. Unless very well designed, mysql/mariadb threads will 
only use a single core per query, so one user on the site could 
potentially stall the site with a huge query. Having multiple cores 
means multiple queries.

Naturally it is more complicated than that, but I figure with the 
generalities you are asking about, that about fits the bill.



On 2015-09-08 13:01, Keith Smith wrote:
> Hi,
> 
> I am wondering what your opinion is on cores and RAM when using a VPS.
> 
> I am thinking about this in the context of Drupal and Magento, both of
> who are resource hogs.
> 
> I was told more RAM is much more valuable on a VPS than is the number 
> of cores.
> 
> I'm assuming 4G of RAM is enough to not go into swap.  I'm thinking
> this should be fine for a production site with moderate traffic
> running either Drupal or Magento.
> 
> As you know more cores means more money when it comes to VPS servers,
> while RAM is cheap.
> 
> Of course we know opcode cache, varnish, and memcache(d) can work
> wonders in speeding up websites. For this discussion lets assume we
> are using none of them.
> 
> The question is, will a second core make all that much difference if
> enough RAM is present to not use swap?  How would I know I need a
> second core - look at the load?
> 
> And is there other consideration or things I should be looking at?
> 
> Thank you very much for all your feedback!!
> 
> Keith
> 
> 
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-- 
Nathan England (480) 559 - 9681
nengland@nmecs.com
http://www.nmecs.com/
Web Developer, PHP Programmer, Lamp Administration, and
Information Security Specialist



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