Re: OT: Munin (was Re: Determining server load from client)

Well, by "default", Cacti polls all of the data sources you've set up every five minutes as well as that's how the docs instruct you to set up the cron job for the poller.  However, with a little understanding of how the rrdtool rras work, you could definitely poll more often and simply edit the existing rras and datasources to expect that or create new ones.  And, yes, the graph customization is pretty cool although for the most part the just map what's available from the rrdtool graph functionality.  If you do decide to set up Cacti I suggest you go straight to the faq section of the manual and read the part about going from a simple script to a graph.  The main manual is almost entirely centered on the built-in networking (e.g. snmp) data sources and, as such, doesn't do much for explaining how to set up other data sources.