[mrtg] MRTG/RRD Performance tests: preliminary results

Niall O'Reilly Niall.oReilly at ucd.ie
Tue Sep 14 09:47:21 CEST 2010

On 13/09/10 23:03, Steve Shipway wrote:
> In fact, we don't use daemon mode here, either.
> The reason for this is that, if using daemon mode, you need to use
> threading

	or multiple daemon instances, each dealing with a different
	collection of equipment.

> and then you lose control over the sequence in which
> Targets are processed

	Good point, but partitioning the network between different
	instances should help here too.

> -- I have some cfg files where separate Targets
> retrieve CPU user/wait/sys/idle stats and combine them to a graph.
> The first retrieve actually gets all 4 stats but caches the second
> pair, so I can be sure they are all in synch.  If I used daemon mode,
> they might do both queries simultaneously.

	Isn't this something the cache-access discipline should
	protect against?

	It seems there are quite a few different styles of using MRTG!


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