[rrd-users] Re: HOWTO: average office hours only

Alex van den Bogaerdt alex at ergens.op.HET.NET
Mon Jan 29 12:14:57 MET 2001

Jakob Ilves wrote:

> What I wonder about is how the monthly and yearly graphs are affected by
> this, as those are using the consolidated values in the rrd database.  Or

The daily graph is also built from consolidated values.  There really is
no difference between an RRA with 300 second time slots or one with 3600
seconds per time slot.  It does of course matter if you use an RRA with
lower resolution. In that case, an interval runs from (for instance)
08:00 - 10:00 and you will then include traffic from 08:00 till 09:00
where you would otherwise not do that.

> (Really short and cryptic formulation of my question: does the solution
> below only affect the presentation of rrd-file data or does it also affect
> the data in the file?)

It only alters the presentation, not the data itself.  If you want to alter
the database, you need to alter its input.  After that, there's no way
(apart from dumping, modifying the dump, restoring) to alter the data.

If you need to keep the altered statistics for a longer time you can
use PRINT (not GPRINT) in rrd_graph and store the outcome.  You can even
use this to feed another RRDtool database.


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