[rrd-users] Re: Who has the most RRD files (or data sources)?

Mark Plaksin happy at usg.edu
Mon Mar 20 18:31:17 MET 2006

Tobias Oetiker <oetiker at ee.ethz.ch> writes:

> Hi Mark,
> opening files is an expensive operation as oposed to writing to a
> file ... so having more DS in a single file makes things faster ...
> unfortunately this places the whole burden of managing the DSs on
> rrdtool or rather on you since rrdtool has no built-in
> functionality for adding and removing DS ...

But opening isn't *that* expensive.  I wrote a short Perl script which
opens and closes all of our 20k+ RRD files and it runs in .5 seconds.  So
it seems like something else is at play.

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