[rrd-users] Re: Interpreting RRD output - Maximum

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Wed Apr 10 22:55:15 MEST 2002

Lyle Brooks wrote:

> I'm getting acquainted with RRDtool and have started to do
> some data collection and graphing.  In doing so, I've come 
> across some areas where I'm not understanding the results.

> Inititively, I would think that "maximum" on the 5 day graph would
> include this "maximum" found on the 24hour graph.

You need to brush up on consolidation.

You are consolidating averages.  The average of (1,2,3,4,5) is 3.
max(1,2,3,4,5) is 5 while max(avg(1,2,3,4,5)) is 3.

You need more RRAs.  They should keep the maxima.  When you're
going to plot and/or print maxima, use those RRAs.

 / 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