[rrd-developers] Implementing TOTAL

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Wed Jul 25 20:52:31 MEST 2001

No feedback yet on my VDEF stuff (hint hint) but I'm thinking of
adding something already.

Every now and then there's a request for the total amount of <foo>
during the interval.  A VDEF:bar=foo,TOTAL line could do the trick
and can be implemented rather quick.

What would be the prefered way to handle unknown intervals?  There
are two options as far as I can see:

1) average(all rates)*timespan(graph)
2) sum(for each defined interval:(rate*stepsize))

The difference would be the unknown intervals.  In the first case
unknown intervals are assumed to be at the average rate, in the
second case unknown intervals are assumed to be zero.

Please advice,
 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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