I noticed I have some devices in my network that are responding very slow on just some specific SNMP-queries so I hacked together a small script that will parse the debug-output of Observium poller or discovery and then show you a list of the snmp-commands that took the longest to complete.

I wrote a blogpost on how to use it here: http://blog.best-practice.se/2016/06/observium-performance-tuning.html

and you can download the script from github: https://github.com/ZerxXxes/observium-logparser

It was very helpful in finding what devices needed a software update ;)

I hope it can be useful for others too

/Markus