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Is it possible to fetch data by RRDTool based on several RRD DBs, for example getting values which are sum of all values fecthed from each RRD?

rs.
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1 Answers1

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the fetch function deals only with one rrd at a time, but in graph and xport you can pull in data from multiple rrd files. You can then mix and match them to your hearts content using CDEF and VDEF. I you just want the data and no grpah, simply use PRINT to get the data out.

hth tobi

Tobi Oetiker
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