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Old 02-08-2008, 11:03 AM   #1
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Registered: Feb 2008
Location: UK
Distribution: Debian Etch
Posts: 5

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How to monitor CPU usage of domains on a VPS

I have 20 domains on a VPS server running Red Hat Enterprise 4 AS.

I regularly keep hitting the memory limits, which slows everything down to almost a complete standstill, but have no idea which domain is causing this to happen. Most of the domains have very little traffic, but 3 or 4 of them have quite a lot, so I'm pretty sure it's one (or more) of them causing the problem.

Is there a way I can see (either in real time or through reports) showing each of the domains on my server and how much memory/CPU/etc each is using?

Old 02-08-2008, 03:07 PM   #2
Registered: Jan 2005
Location: germany
Distribution: suse, opensuse, debian, others for testing
Posts: 307

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I like munin (

It's easy to install and runs ok inside openvz environments. makes nice plots using rrdtool and cron. can be viewed with a webbrowser. it's a client/server system. just install the clients on the nodes and have one other computer with network access run the server which pulls all the data and makes the graphs (5 min interval, so short spikes go unnoticed)

they have a demo site:
additional plugins can be found here:

the standard plugins cover stuff like:

cpu usage, memory usage, network traffic (works with venet0:0 aliases), and so forth

Last edited by rtspitz; 02-08-2008 at 03:08 PM.


cpu, enterprise, memory, monitor, performance, usage, vps

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