Craig, When you update the bandwidth on an interface the MAX value of the RRDTool DS is set to MAX(BW_IN,BW_OUT) * 1.5
So, when the poller tried to update the RRD file with any value which its Delta is more than the DS MAX, the measure is discarded, and since we will not poll the interface again for 5 minutes, the Data Point will remain NaN. So, its always useful to set the Bw IN and Out to real values not the 100Mb or 1000Mb the router tells you. Javier Craig Small wrote: > On Tue, May 31, 2005 at 05:59:49AM -0300, Javier Szyszlican wrote: > >>RRDtool does not have a way to distinguish that from a counter rollover >>(caused >>by usage). > > sysUpTime may help... though what a nasty poller to make it happen! > > >>So, the way to handle this is to have sensible "Bandwidth In" and "Bandwidth >>Out" values for this interface, so a 60Mbps spike will be filtered. > > Can you explain how the filtering works? I'm thinking of documenting > this from two angles. > 1) Stop these reset spikes > 2) Perhaps this is why people get gaps at times if the maxes are not > set correctly? > > I think it was something like if it the result gives over 1.5 the max it > was dropped. does it give nothing, NaN or 0? > > - Craig -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Javier Szyszlican, Project Leader, JFFNMS [EMAIL PROTECTED] I hope JFFNMS or I were helpful to you, if you can, please donate at http://jffnms.org/donate ------------------------------------------------------- This SF.Net email is sponsored by Yahoo. Introducing Yahoo! Search Developer Network - Create apps using Yahoo! Search APIs Find out how you can build Yahoo! directly into your own Applications - visit http://developer.yahoo.net/?fr=offad-ysdn-ostg-q22005 _______________________________________________ jffnms-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jffnms-users
