[Observium] Observium wrong graph traffic statistic

Dear Team,

I just install Observium and as I observed the graph traffic statistic seem not accurate compared to my Cacti graph monitoring system then I ask my Network Engineer to check which one is accurate traffic between Observium and Cacti, as the result after checking real traffic on my router device, Observium seems not accurate.

Note: Graph statistic value is different is around 1GB, this is a huge number.

Can anyone explain why or anyone experiences like me?

[image: Inline image 1]

My real Out traffic should be around 5.78GB instead

Thanks so much.