[rrd-users] Re: resize question

Alex van den Bogaerdt alex at ergens.op.het.net
Fri Dec 10 15:45:12 MET 2004

On Fri, Dec 10, 2004 at 03:20:29PM +0100, Robin Elfrink wrote:

> > Ack.  What happened when you added "-r 1800" ?
> It said:
> ERROR: unknown function '1800'

Duh, my mistake.  "-r" was already used in rrdtool graph so the
option to use is different:  "-S 1800" or "--step 1800".

> Probably an old rrdtool version: 1.0.42. Would that matter much in how 
> rrdfetch and rrdgraph get their data?

Probably not, but I am not sure.

The docs for 1.0.49 say:

"By default rrdgraph calculates the width of one pixel in the time
 domain and tries to get data at that resolution from the RRD.

I always try to match the amount of time with the amount of pixels.
Maybe you can do the same and see if that helps.

> Thanks, I'll set up a cron job for every week for the next year or so, 
> that'll do fine.

Make sure to check that it works.  If you are too late, you loose
your precious data.  You seem to understand why this workaround
works so I need not explain.


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