[rrd-users] Re: Beginner question regarding RRA's

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Mon Jan 8 14:55:03 MET 2001


Rainer Bawidamann wrote:
> 
> In article <20010107150517.A20760 at visi.com>,
> 	sdk at shell.yuck.net (Stephen) writes:
> > 
> > After reading the docs there's one thing that confuses me: the RRA
> > consolidate functions and steps specification. Some of the examples I
> > see have only a '1' for the number of steps. So for example, the RRD
> > that approximates MRTG:
> [..]
> > # RRA:AVERAGE:0.5:1:600
> > # RRA:MAX:0.5:1:600
> [..]
> > What's the difference between the first AVERAGE and MAX definitions?  
> 
> I think there is no real difference. The people writing the code to
> create RRDs for MRTG didn't think about this aspect (I^Wthey weren't
> aware that this RRA is obsolete). Me thinks that you're intelligent
> enough to write a CGI for MRTG ... ;-}

IMHO there is one big difference: if you write scripts to process the
data, you need not provide a special case for average vs. max.

In other words: a little bit of extra disk space and hardly any more
processing power results in more easy programming.  This may or may not
result in fewer bugs.

Personally I think it is worth it.

cheers,
-- 
   __________________________________________________________________
 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
| work                                                         private |
| My employer is capable of speaking therefore I speak only for myself |
+----------------------------------------------------------------------+
| Technical questions sent directly to me will be nuked. Use the list. | 
+----------------------------------------------------------------------+
| http://faq.mrtg.org/                                                 |
| http://rrdtool.eu.org  --> tutorial                                  |
+----------------------------------------------------------------------+

--
Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/rrd-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi



More information about the rrd-users mailing list