Performance graph data inconsistent

[jvaira]

When looking at performance data graphs we are seeing different data sets for the 30 day timeframe vs the 24 hour. For example when looking at cpu usage for 24 hours we see a 5 minute average load max of 35% but when looking at the 30 day timeframe we see a 5 minute average load max of 25%. Please see attached screen shots for examples.

[cdienger]

This is expected behavior currently and a feature request has been filed to change it - https://support.nagios.com/forum/viewto ... 34#p180134. Adding new features is done at the discretion of our dev team and we don't have an eta at this point, but the roadmap does point to some updates to graphing in 5.7 - http://nagios.com/roadmaps/

[jvaira]

Hello @cdienger,
Maybe I am not understanding correctly but how would the minimum and maximum values on the graphs affect what is displayed for the 5 minute average? After investigating a little closer I noticed that the 30 day graph seems to be plotting data every 30 minutes whereas the 5 minute graph is plotting every 5 minutes. If this is by design should the 30 day graph not read 30 minute average instead of 5?

[npolovenko]

@jvaira, By design, performance data in RRD files gets averaged out with time. The larger the time period, the more averaged the data is going to get. The idea behind this is to not allow RRD files to reach huge sizes and take up too much space on the hard drive. Please see this article:
https://support.nagios.com/kb/article/n ... g-768.html