detailed memory information with SNMP

[Joel CARNAT <joel%carnat.net@localhost>]

Hi,

I'm configuring rrdtool to get detailed memory stats (NetBSD/xen 
3.0_STABLE, pkgsrc-2006Q1).
I found two kinds of OID ".1.3.6.1.2.1.25.2" and ".1.3.6.1.4.1.2021.4" ; 
none of them provide as many details as the "top" command does ( 
"Memory: 62M Act, 29M Inact, 4088K Wired, 15M Exec, 50M File, 4888K Free").

Is there another OID that I missed or do I have to script above "top" to 
get detailed memory stats ?

TIA,
   Jo