[rrd-users] Re: RRA:MAX not acting like I thought when "multiple updates in a single step"

[Jean-Francois Patenaude]

> Having a step size of 60 and storing one PDP per CDP uses the same amount
> of bytes compared to step size 1 and 60 PDPs per CDP.

Ohhh, you are absolutely right.  The size of the datafile is determined
by the number of rows of the RRA.

And since I will stick to the same ratio (PDP vs CDP) I will be able to
keep all my old datafiles !   I'll just need to modify the XML file to
put my new step/pdp_per_row values.

Even simplier to maintain than patching the source code !

Jf.

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