[rrd-users] Re: how 'bout multiple DS updates with same time?!
oetiker at ee.ethz.ch
Sat Sep 25 15:45:46 MEST 1999
Yesterday you sent me mail regarding Re: [rrd-users] how 'bout multiple DS...:
*> > From: Tobias Oetiker
*> Hi Tobi,
*> > I will certainly look carefully at a patch which adds this feature
*> > ... but
*> > there ar a number of fundamental roblems to solve in the process ... check
*> > out the database format to see how it is setup ... just imagine how to cro
*> > ss
*> > a primary time point when not all dses have been updated ...
*> > but don't thret ... for your loosly opled data I would sugest to use a
*> > separate rrd for each ds anyway ... this will prvide all the flexibility
*> > you
*> > want ...
*> Ahh, yea, I fully agree. And I would go so far as to claim that
*> (for example) ifInOctets and ifOutOctets are, by definition,
*> loosely coupled data because they are gotten via seperate
*> Perhaps a few sentences in the doc mentioning this situation
*> would be more efficient and desirable than actually adding
*> this feature?! (I'd rather see the "big issues" with RRDtool
*> addressed rather than having time spent writing code that can
*> be, imo, somewhat elegantly "worked-around.")
would you mind writing a few paagraphs for rrdutorisl.pod or rrdcreate.pod?
this would be great ...
*> The tact I'm taking now is to just fudge the update times:
*> since I put a 5 second timeout on executing my collection
*> scripts, the fudge factor is less than 1.6% (5/300). If the
*> network is hosed enough to cause a five second, graphing NaN
*> is a-okay.
*> - - -
*> systems guy
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