[rrd-users] Re: hourly displays but not daily

[Serge Maandag]

Remember that the daily rra is an average of more than one primary data point.

Consider this scenario:
- The hourly graph uses 1 minute samples 
- The daily graph uses 5 minute samples
- The 1 minute samples alternate between 0 and 50

In this scenario the daily graph will show samples of 20 ( =(0+50+0+50+0)/5 ).

You can define a max rra instead of an average rra if that's more to your likings.

Serge.

-----Original Message-----
From: David Coder [mailto:dcoder at verio.net]
Sent: maandag 14 oktober 2002 20:52
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] hourly displays but not daily




having been away for a week i have found on my return that the "daily" graph
does not reflect any of the data of the "hourly" graph on some interfaces.
am i right in assuming that these graphs are constructed from the same rrd's? 
if so, what could account for this anomaly?

david


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