Incorrect speed display in realtime port graph

Tags: #<Tag:0x00007f064460bd40>

Hi all,

I’ve installed LibreNMS 1.59 and I also noticed there have incorrect speed displayed on the realtime port graph when I using less than 5 seconds polling, and it’s normal for 5s polling.

In below screenshot, I can see the speed is more then 10Gbps on 10G interface, but the real traffic is around 150Mbps.

Does anyone know how to fix this issue?

Please check out this doc
https://docs.librenms.org/Extensions/RRDTune/

Speed is also incorrect for me after tuning

It seems that 15s polling is correct

I think the page does not get the info on time and extrapolate to 5s

The counter values are then for more than 5s