[Xymon] monitor runtime of processes

Hi !

Unfortunatley i didn't found a solution for my problem except these threads, which are not really a soluton :-(

http://lists.xymon.com/archive/2008-February/017554.html http://lists.xymon.com/archive/2013-July/037868.html

The question is, if anybody has a idea, how i can monitor the runtime for certain processes, preferably with his pid ?

My real problem is, that my backup-system runs at beginning of the months maybe more than 2 days ... but in the normal way it's runs 2-4 hours ...

So, i want to have a yellow alert after 24 hours and a red alert after 48 hours .. is this possible ?

Thanks & Cheers

    Martin