[rrd-users] Re: rrdtool create
georges at norm.lu
Thu Dec 9 14:22:41 MET 2004
> If you use the DERIVE_with_minimum_rate_zero method, you are telling
> RRDtool to ignore the updates around the reset. This results in a loss
> of information (a couple of updates will result in unknown data).
> If you use the tripple_update method, you are telling RRDtool what the
> rate was just before the reset, and when the reset happened. This way,
> RRDtool has no unknown data hence it has more reliable data. You will
> still loose some information, but this loss is limited as it is only
> the amount of data between the last update and the reset. This is one
> second, if you follow my suggestion.
i understand that that is the best mehod. but it is not so elegant to
i mean i would have to make some more cronjobs, and only for the end of the
> I think you are looking at data that's already in the RRD. Changing
> the DS_type will only influence data that is collected after this change.
oh ok :-)
well i was looking at already existing data..
> Option 1:
> - dump the database (rrdtool dump)
> - edit the xml file
> - restore the database (rrdtool restore)
> This modifies the available data.
i tried that, but somehow it didn't work as expected.
anyway, i can't do that because i have around 300 rrds :-).
> Option 2:
> - read the tutorial
> - implement the "pretend weird data isn't there" workaround
> This modifies the representation of the available data.
that did it!
awesome, my graphs look just as i expect them to look like :-).
thank you very much for your help Alex!!!
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