[rrd-users] Aggregate/combine several RRDs

Raimund Berger raimund.berger at gmail.com
Fri Jun 20 23:37:24 CEST 2008

Alex van den Bogaerdt <alex at ergens.op.het.net> writes:

> On Fri, Jun 20, 2008 at 10:37:31PM +0200, Raimund Berger wrote:
>> "Raimund Berger" <raimund.berger at gmail.com> writes:
>> >> Creating another RRDfile isn't hard to do.  Filling it with numbers
>> >> isn't hard either.  The biggest challenge is to get your minimum and
>> >> maximum rates correct.
>> >
>> > And agreed, fetch and update via a script should not be too hard to
>> > accomplish.
>> Correction, not agreed. I forgot what I initially had in mind as being
>> the main obstacle to storage of computed intermediates, i.e. fetch
>> provoding no cdef.
>> While you can perform various computations on your input with graph
>> via cdef, I don't see a similar facility coming with fetch and/or
>> companions. So apparently, there's no way to stash those computed
>> results away in an RRD.
> Have you looked at rrdtool xport ?

That one looks better, thanks a lot.

Incidentally, and as I admittedly didn't look at those xml outputs
very closely yet, do you know if xport does write dump format, so it's
output can directly be fed into restore again?

More information about the rrd-users mailing list