I am not a sys admin, I just play one occasionally for clients. I'm a developer, and usually look for the easiest solutions available for deploying applications. I have a dedicated virtual web server at Mediatemple.com using CentOS and Plesk.
For the last two days it's been absolutely slow as can be and I have no idea why. Traffic is low if anything and everything on the application end checks out okay.
How do I figure out what else could be causing the slowness? I apologize for such a generic question, but I haven't the faintest of where to begin. I'm not sure what I should or shouldn't be looking at given that this is hosted on a virtual server.
I do have SSH access so I can muck around in there. Where should I check my web server for potential bottlenecks?