Checking server swap utilization

Hey guys which is accurate in checking the servers swap utilization is it swapinfo or memdetail?:confused:

Why ?
memdetail tells you what is used but not what for...
So if your question is why memdetail is saying Im using device swap
Its because it reporting what you see as "reserved" when you type swapinfo -tam...

So to know if you are swapping you should rely on swapinfo...