[rrd-users] RRD Migration

[Tobias Oetiker]

Hi Kyle,

Today Kyle Brandt wrote:

> I am considering redoing all my rra files to capture a higher
> resolution of data.
>
> 1) If I create new rra files with a higher time resolution, can I back
> fill them with data from the lower rra resolution?

have a look at https://svn.oetiker.ch/rrdtool/trunk/contrib/rrdjig/

> 2) How do I estimate the size of for each RRA file? Is it something
> like (Some Constant) * Data Points + Base?

each data point takes 8 bytes ... so the size is essentially

all the RRAs summed up plus a few bytes for the headers ...

The size of an RRA is the Columns * Rows * 8

cheers
tobi

>
> Thank you,
> Kyle
>
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-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900