[rrd-users] building a huge rrd / any limitations?

Sebastian Harl sh at tokkee.org
Thu Jun 12 08:14:09 CEST 2008

Hi Karl,

On Thu, Jun 12, 2008 at 12:41:28AM +0200, Karl Fischer wrote:
> >> If that's the case I can split up into multiple rrd's
> >> with a lower number of DS per rrd and each of them will
> >> still stay below 2GB ...
> >>
> >> Any comments on the performance such a rrd might show?
> >> Think about storing values for a 5+ year period with a
> >> one minute resolution ... (3+ million rows)
> >
> > Performance will be fine ... rrd is not impacted by the size of the
> > file ... you should keep lower resolutio RRAs along side the hires
> > RRAs though, so that when doing a yearly graph or something like
> > this, not the whole 5 mio records have to be read ...
> >
> great - that sounds good to me.
> Means if I stay below the 2GB file size (and within the 32bit time
> range ;-) ), I should be safe ?

Yes, you should be safe then. Thanks for the hint about the UNIX time
range - Tobi also pointed that out in a private E-mail.

Tobi, btw., the patch I posted to this thread earlier could imho go into
the 1.4 development branch. I don't think it should be put into 1.3 as
it breaks the ABI (there are a couple of functions expecting off_t which
would then expect 8 bytes for that argument).


Sebastian "tokkee" Harl +++ GnuPG-ID: 0x8501C7FC +++ http://tokkee.org/

Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety.         -- Benjamin Franklin

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