[rrd-users] non-sequential updates?

Chris Majewski majewski at cs.ubc.ca
Tue Apr 16 20:31:04 MEST 2002

Is it possible to do non-sequential updates?

For example,  the database ifInput.168.rrd stores a  counter of octets
flowing into interface 168 of my router.
The data  is collected via SNMP  by Sun NetManager and  stored in text

Somebody  comes  along  and wants  to  see  a  graph of  traffic  into
interface 168 over the course of April 15th, 2002.

I have a script that will
  * read the file data/2002-04/15/ifInput.168.Z
  * update ifInput.168.rrd
  * generate the graph using the newly acquired data
  * feed the graph to a webpage

So far so good. Now somebody else comes along and wants to see a graph
for April 8th, 2002. My script bombs with an error of this form:

ERROR: illegal attempt to update using time 1016265372 when last update time is 1018680995 (minimum one second step)


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