[rrd-users] RRDTool Aggregation Inaccuracies.

Carson Gaspar carson at taltos.org
Thu Jul 9 08:46:36 CEST 2009

NHarris wrote:

> Second, I assumed that the aggregation (via CDEF) was done and THEN a
> maxima was pulled from the new aggregation

If you _really_ need the true maxima for (A+B), you should be able to create a 
COMPUTE dataset to do so. But I've never played with COMPUTE datasets, so my 
knowledge is just from the man page.

You can fake it by graphing MAX(AVG(A) + AVG(B)), but you won't get true maxima. 
  It will be fairly close, though.


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