Originally Posted by webconfigure
If you will set the limit that will be best. Because assigning the unlimited resources will increase the server load. It is best to set the limit. CloudLinux has the option in which you can set the resource limit. It is best for all sites on the server as well as for maintaining the uptime of server.
It's worth noting that before CloudLinux all providers except a couple that had custom kernels / kernel extensions were giving total access to every CPU to every account.
It's not impossible to maintain a server in this fashion - but you'll end up with far less capacity overall if you don't manually keep an eye on CPU usage on a regular and ongoing basis.
One of the things CloudLinux has really helped with is reducing the amount of time providers have to spend auditing usage and working with customers.
Out of many thousands of accounts we only have a few here or there that cross limits and we generally reach out and try to work with them to resolve those issues. These are the same accounts that we would notice and reach out to even without CloudLinux - except they would possibly impact others / the server as a whole for a brief period before we caught it.