Gavin Kelman (2005-01-27 18:00):
I recently started graphing CPU busy time with SNMP and it worked fine for a few weeks, and then all of sudden one day, it always returned 0 and has done ever since.
Hi Gavin.
We encountered that behaviour as well, this looks like BugID 141441. Also, take look at BugID 12961 for additional enlightenment :)
Concerning monitoring in general, you may also want to check out ToasterView by Ben Rockwood: http://www.cuddletech.com/code/toasterview
I suspect rebooting the filer would bring the SNMP CPU reading back to life, ...
That worked in our case.
-Cornelius