I am using zenoss 3.2.1 and have configure some performance based emails alerts . i have recieving alerts like " threshold of Memory exceeded: current value 609920000.00" in Subject and Massage body.
I need that message show like "threshold of Memory exceeded: current value 609 MB"
You should look into event transforms. There are many examples in the forums, wikis, etc regarding similar requests for disk space used and should be easily adaptable to the memory one you need.
LEPP Computer Group
Please remember that this is a users forum - a best efforts by the community, for the community.
James suggested that you try searching the forum. If you type in "transform" to the search box then you get pages of entries on transforms. You need to do a little more searching rather than just trying to bump your initial question.
Try http://community.zenoss.org/docs/DOC-2554 - there is certainly an example in there that does arithmetic on event attributes.