[rrd-users] Re: What is the best way to consolidate RRD data into one average value?

Alex van den Bogaerdt alex at ergens.op.het.net
Tue Jan 23 08:52:50 MET 2007

On Mon, Jan 22, 2007 at 06:22:55PM -0800, Jim Ausman wrote:
> Hi Guys,
> I have quite a few separate RRD files that are holding CPU percentage
> utilization numbers that I want to consolidate into one value. I know
> how to graph them all separately, but how do I present them as one
> average value? I guess I can use rrdxport and then add them up using
> perl, but this seems clumsy and it must have been done before. Is this
> already part of RRD? I already scoured the man pages and the archives,
> but there is quite possibly something that I have missed.

Am I missing something, or can you just add the values up using
RRDtool's standard 'CDEF' mechanisms ?

CDEF is discussed in the rrd graph documentation, and in more detail
in the cdeftutorial.

Alex van den Bogaerdt

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