Missing Data and extreme readings?

OK - I’m a complete newb so apologies if I should have posted more information…
Recently set up LibreNMS and have it monitoring a few key devices on our network. All good so far, until this evening when there is a gap in the data from most of the devices on the network and then an extreme reading - see attached graph on the traffic from / to our main backhaul.
Any ideas?

check here -> https://docs.librenms.org/Support/FAQ/#faq15

Thanks Kevin - I’ve not run rrdtune so will give that a go, however the poller performance looked OK up to now with total poller time being ~90 seconds. See graph below.

It appears that the poller has stopped running between around 18:00 and 20:30 on Monday.


Right, check the performance doc see if you can do some more performance running on your system. Also check the events of in the webui.