Nagios XI Graph accuracy
Nagios XI Graph accuracy
Hi, is any chance to set accuracy in nagios XI graph's? My service returned only integer but on the graph nagios shows float.
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Re: Nagios XI Graph accuracy
This is a result of how RRDTool collects data. Unless the step and time are 100% in sync which never happens you will get floating point. RRDTool interpolates data to calculate what the data would be on the defined step. I was looking for a better explanation/tutorial that I'm sure I read one somewhere a long time ago but I could not find the one I was thinking of but found this instead. This picture shows how RRD interpolates two values 7 and 10 taken 310 seconds apart in a round robin db with a 300 second step size. Image and discussion from http://forums.cacti.net/about33897.html
Last edited by rseiwert on Wed Apr 08, 2015 4:10 pm, edited 1 time in total.
Grumpy Olde IT Guy
Re: Nagios XI Graph accuracy
Thank you rseiwert for your excellent explanation. fortisit, did that help? Can we go ahead and close this thread?
Re: Nagios XI Graph accuracy
Yes, you can close this issue.