[rrd-users] RRDTool Aggregation Inaccuracies.
nicholas.kyle at gmail.com
Thu Jul 9 02:28:29 CEST 2009
It looks like this is related to the resolution interval of the graph
Of course the graphs put out the right peak for 24hour graphs - there are
only 288 data points to contend with, which easily fits into the 400px
The problem starts when I have more data points than pixels. RRDGraph seems
to be doing some consolidation on those data points to make them fit (makes
My (new) question is this: if these RRAs are set up to use MAXIMUM and I am
calling VDEFs with MAXIMUM, why are the graphs returning different numbers?
Shouldn't the longer time frames simply have consolidated the data by taking
the max data points and tossing the rest?
More importantly, why is RRDGraph returning values that are *higher* than
the actual max that RRDFetch returns?
Hope someone can help - I'm really starting to get confused.
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