[mrtg] Re: MRTG History...or Interactive MRTG revisited

Michael Grice grice at binc.net
Thu Mar 4 20:23:31 MET 2004

* PAUL WILLIAMSON <pwilliamson at mandtbank.com> [040304 13:15] wrote:
> >>>> "Cook, Garry" <GWCOOK at mactec.com> 03/04/04 01:45PM >>>
> >[snip]
> >
> >See that, you learn something new every day.
> >Does adjusting the 5 minute RRA increase the size of the RRD? If so, it
> >might be prohibitive for me to try this approach.
> >Where can I read more on this, is it in the RRDTool docs, or does the
> >cfgmaker manual go into detail?
> >
> >Garry W. Cook, CCNA
> Garry,
> Yes, changing this makes the RRD grow from about 94k to about 3.7 mb.
> There's nothing specifically in the manual about it, but if you look in 
> the mrtg collector right around where the actual RRD is created, adjust 
> the 5 minute RRA to have as many rows as you want, not just the 
> default of whatever it is (I think 288).

There's also a parameter introduced sometime after 2.9.29 (the version
I'm using) called RRDRowCount which appears to change the number of rows
of high-resolution data kept.

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