[rrd-users] rrdfetch resolution problem
matt at conundrum.com
Thu May 3 03:33:40 CEST 2007
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On 2007-May-02, at 20:10, Alex van den Bogaerdt wrote:
> On Wed, May 02, 2007 at 05:02:22PM -0400, Matt Pounsett wrote:
>> Thanks for the clarification.. I understand what's going on now, and
>> should be able to work around it. I think we'll wind up re-creating
>> these in order to get more of the data we want, later.
> Don't forget to read that fine manual on "rrdtool resize" !
Oooh.. I hadn't spotted that. Thanks, it will be extremely helpful.
> Do not increase the amount of rows significantly in one go. Do this
> bit by bit, or else you will see NaN a lot when you query data that
> is available in other RRAs, but rrdtool selects the 5-minute RRA as
> a best match. Think about this for a while if you don't get it at
I think this would happen anyway, wouldn't it? According to the
docs, new rows are always added as old data... so if I were to double
the number of rows, the RRA would just go back twice as far in the
past, and the new stuff should be untouched. Shouldn't it?
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