[rrd-users] Selecting a Particular RRA

Tarus Balog tarus at opennms.org
Mon Jan 16 17:51:44 MET 2006

If I want to store five minute samples (a step of 300) for a month,  
and the hourly average, min and max for 366 days, I can use the  
following RRAs:


If I use a DEF to access the collected data, is there a way to  
request the second RRA for average versus the first? In other words,  
suppose I request an average value for the month of December. It  
appears that RRDTool will use the highly granular data from the first  
RRA. If I were to request the same average 30 days from now, it would  
be slightly different, since the values would only exist in the  
second RRA and they are less granular.

Since I am only storing one value in the first RRA, I guess I could  
use LAST, MIN or MAX and avoid the confusion with AVERAGE, but that  
would introduce a new set of problems for me (sigh).

Any help would be appreciated, and I hope I've explained my question  
sufficiently. Please feel free to point me at a URL or FAQ if I  
missed it in my research.



Tarus Balog
The OpenNMS Group, Inc.
Main  : +1 919 545 2553   Fax:   +1 503-961-7746
Direct: +1 919 647 4749   Skype: tarusb
Key Fingerprint: 8945 8521 9771 FEC9 5481  512B FECA 11D2 FD82 B45C

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://lists.ee.ethz.ch/rrd-users
WebAdmin    http://lists.ee.ethz.ch/lsg2.cgi

More information about the rrd-users mailing list