[rrd-users] Graphing Sparse Data

Laack,Jacob C JLaack at alegent.org
Wed May 14 16:39:33 CEST 2008

I am monitoring many services with Nagios and the data ends up in RRDs which I graph using pnp.  (I promise this is an rrd question.)  One type of service is only checked every 6 hours (instead of the normal 5 minutes) so only 4 pieces of data are put into the RRD file a day.  rrdgraph shows empty graphs for 4 and 24 hours since the data is so sparse.  Would it be possible to use CDEF (or some other rrdgraph magic) so that if the current plot point contains no data, it looks ahead into the RRD file and uses that data?  I've googled my problem and haven't stumbled upon a solution.  Thanks for your help.

Jake Laack
Alegent Health, Open Systems Engineer
11128 John Galt Blvd, Suite 500, Omaha, NE 68137
Phone: 402-717-1146, Pager: 402-398-6900 #2665

PLEASE NOTE: My e-mail address is now jacob.laack at alegent.org<mailto:jacob.laack at alegent.org>

Sponsored by Catholic Health Initiatives and Immanuel Health Systems, Alegent Health is faithful to the healing ministry of Jesus Christ, providing high quality care for the body, mind and spirit of every person.

The information contained in this communication, including attachments, is confidential and private and intended only for the use of the addressees. Unauthorized use, disclosure, distribution or copying is strictly prohibited and may be unlawful. If you received this communication in error, please inform us of the erroneous delivery by return e-mail message from your computer. Additionally, although all attachments have been scanned at the source for viruses, the recipient should check any attachments for the presence of viruses before opening. Alegent Health accepts no liability for any damage caused by any virus transmitted by this e-mail. Thank you for your cooperation.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.oetiker.ch/pipermail/rrd-users/attachments/20080514/7c5857aa/attachment.html 

More information about the rrd-users mailing list