Creating a proper threshold

If you want to know the right values you can use while creating a threshold refer the below link,

http://blogs.manageengine.com/appmanager/2006/03/24/tip-configuring-thresholds/

while creating thresholds make sure to give proper conditions for Critical, Warning and Clear. Some times users create thresholds with erroneous conditions and the associated attributes will end up becoming unknown or may not generate proper alerts.

For example, lets assume for physical memory utilization ( in % ) i have associated a threshold according to which it will be in Critical alert > 90, Warning > 80 and Clear < 60. The problem with this threshold will occur when physical memory utilization value is between 80 and 60, since no proper state is defined it will be unknown state and you will not get proper alerting. Also for the following threshold according to which it will be in Critical alert > 90, Warning > 80 and Clear < 80 if the value physical memory utilization becomes 80, it will be in unknown state. The correct threshold in this scenario will be Critical alert > 90, Warning > 80 and Clear <= 80.

– Arun