I have a Linux server hosted by Gandi.
It has the following hosted:
4x Wordpress installs
2x Magento installs
It has 4gb of RAM, but is loading the sites very slowly every time we get to around 2400mb free. So we're a long way off from using all our RAM.
I need someone to look at our server, apache2 and mysql config, optimize as needed, and tell me what extra resource, if any, is required to allow the server to deal with higher traffic volumes.