[PATCH] Simple ARC stats in top

[John Baldwin]

I have some patches based on a script I got from avg@ that add some simplistic 
ARC stats to top so that one can see how much of wired memory is set aside for 
ARC, and how that memory is split up.  The patch is against 8-stable:
http://www.FreeBSD.org/~jhb/patches/top_arc.patch

Sample output:

Mem: 1245M Active, 1393M Inact, 21G Wired, 309M Buf, 23G Free
ARC: 19G Total, 1381M MRU, 17G MFU, 272K Anon, 232M Header, 442M Other
Swap: 8192M Total, 8192M Free

Comments, etc.?

-- 
John Baldwin