From owner-freebsd-hackers@FreeBSD.ORG  Wed Nov 14 17:13:48 2007
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Date: Wed, 14 Nov 2007 10:11:41 -0600
From: Rob Belics <rob_belics@charter.net>
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Subject: FreeBSD cache memory allocation
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Someone I can't stand said this about FreeBSD.  Though I know C, I don't 
know anything about this and would love to respond. My first thought was 
'contigmalloc' but I'm not sure it's equivalent.
[QUOTE]The kernel is really lacking some features. They need a method to 
set precise type of memory cache but BSD doesn't provide way to specify 
memory cache.

For that reason MS has the beautiful 
MmAllocateContigousMemorySpecifyCache()[/QUOTE]