[rrd-users] Re: Application of rrd

[Tobias Oetiker]

Today you sent me mail regarding [rrd-users] Re: Application of rrd:

*> Hi,
*> 
*> Thanks Rainer for that comment.
*> 
*> I was aware of  UNKOWN values, but surely the graph will still show the
*> period (eg night-time or weekend) even if the values are UNKNOWN?
*> 
*> Also, won't relatively long sequences of UNKNOWNs have some effect on
*> averages over time?

UNKNOWN gets ignored for averages ... when building consolidations
you can specify how much UNKNOWN will get ignored and starting from
what point the consolidated value will be UNKNOWN as well ... 

as for the graphs, just set start and end so that only the weekdays
are in the graph and everything will be fine ... 


cheers
tobi
*> 
*> (The values I am currently interested in will be GAUGE type - but I was also
*> trying to see how such gaps would effect other types).
*> 
*> David.
*> 
*> rainer at roka.net wrote:
*> 
*> > Hi David,
*> >
*> > On Wed, Apr 26, 2000 at 08:57:36AM +0100, David Arnstein wrote:
*> >
*> > > I am collecting business data which I would like to graph and archive in
*> > > a rrd-tool manner.
*> > > However the data changes only during the business day - values remain
*> > > static overnight and at weekends etc.
*> > >
*> > > I suppose I could automatically make up data points during that time
*> > > (repeating the last real value), but I would like the graphing to avoid
*> > > displaying the 'non -active' periods and for the statistics to ignore
*> > > them.
*> >
*> > Don't enter values in this periods of time. The result will be a special
*> > Value named UNKNOWN. And this values will ignored by 'rrdtool graph'.
*> >
*> > Ciao
*> > --
*> > Rainer Nagel                                   | Rainer.Nagel at topnet.de
*> > topnet EDV und Datenkommunikation AG           | Tel.: +49 211 53087 423
*> > WillstätterStr. 13, D-40549 Düsseldorf         | Fax.: +49 211 53087 119
*> >
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*> 

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