I run a Xenforo forum that gets about 60-120 users at a time, depending on time of day. And after the first day of running the forum, servers loads have being extremely high: spiking up to 16 on a 4 core system at times. The memory shows about 60% use at max, so it's not a problem there.
Using top in ssh shows the problem to be php. It constitutes the majority of the high cpu load processes.
What can i do to help alleviate this problem?
I'm a complete noob at running a VPS, btw, so please answer in layman's terms.
Now, before I do anything with it, the page you linked me to earlier said that permissions are more fiddly with DSO. Will the permissions set themselves, or will I? Because if I need to, I'd like you(or anyone) to help me figure that out before I do anything.
Like I mentioned earlier, it's just one website running on the VPS, and that's all I ever foresee there being. The forum is the entire point of it, after all.
Anyway, with the assistance of a much more IT knowledgeable member of my forum, we switched to FastCGI and a reinstall was done with the old database imported into the new install. And, all the problems seem to have gone away.
So, it doesn't seem like it was a configuration issue, it was probably something I did during installation.