Good tools for analyzing VPS performance (VPS running WordPress blogs?

Question

What are tools you would recommend for analyzing VPS performance. Specifically I run several Wordpress blogs on a VPS and would like to find some tools to help me find issues worth looking into (so I can address them).

I use New Relic for getting some data on where to focus some attention on our rails applications and find it very useful.

I have a feeling there might be issues with memory use. I would love to see something that showed memory use over time so I oculd see what my memory use looks like. I am considering upgrade the VPS and this would be one useful piece of data.

Answer 1

"top" is always a good place to start in the terminal.

but http://scoutapp.com/ is a really good monitoring app, and easy to implement on vps servers

Answer 2

Try Munin, is a great monitoring app with a web interface, http://munin-monitoring.org/