graphing system usage (was Re: [lug] forcing certain services to use eth1 instead of eth0)

[Kevin Fenzi]

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>>>>> "John" == John Hernandez <John.Hernandez at noaa.gov> writes:

John> I see.  I wonder if something else in the IO subsystem was
John> overburdened, rather than the NIC itself?  1 x Gig-E is a LOT of
John> bandwidth.  Have you tried tracking (or graphing) the interface
John> utilization over time, such as with MRTG or similar?

I'll throw in a plug here for munin: 

http://munin.projects.linpro.no/

I maintain the munin packages for fedora-extras, so if you have a fc4
machine you should just be able to do: 

yum install munin munin-node

(The munin package is the central server/collector, munin-node runs on
each of the machines you want to monitor). 

Munin is nice because it auto-detects all the items on a particular
machine on install, so you have to do very little config to start
monitoring a ton of things. 

In this instance, munin might show you that your cpu is the bottleneck
or disk or irq's or whatever. 

kevin
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