Cached memory

[Tom Spec]

Is there a kernel parameter or something I can tune to limit the amount of memory that will be used for cache (i.e. 144 in this example)?  Let's say I never wanted that to go past 64.

free -m
             total       used       free     shared    buffers     cached
Mem:           503        399        104          0         67        144
-/+ buffers/cache:        187        315
Swap:          511          0        511


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20080227/02c4bba0/attachment-0001.htm>