Originally Posted by Julien@HS
Collabora if you oversell you will always endup overloading your servers, no matter what. .
You will always end up overloading your server without overselling -- if you don't stop provisioning at some point.
A server will perform the same with X number of sites no matter how those sites got there -- by overselling or no overselling. Its the hosting plan that determines overselling, not the server. You can oversell one day and stop the next day just by changing a disk space bullet point in hosting plan. Server performance will not change between those two days.
Overselling is a hosting plan model, its not a server attribute. A host that oversells does so even before the first site is added to a server. That is, you can oversell and have an empty server. Its all in the hosting plan for a given server. The server cannot read your hosting plan and determine if you are overselling or not
An empty server performs the same whether you are overselling or not. The server with 10 sites performs the same whether you are overselling or not. The server with 100 sites performs the same whether you are overselling or not, ad nauseum. X sites will use Y RAM and Z CPU regardless of overselling or not overselling.
To claim that a server's performance is dictated by a few words on a hosting plan page instead of the actual sites on that server is ludicrous and ignorant.