>I noticed this passage too, but ...
>
>
>>Quoting from http://www.daemonnews.org/200001/freebsd_vm.html :
>>
>><snip>*
>>When To Free a Page*
>>
>>Since the VM system uses all available memory for disk caching, there
>>
>>
> ^^^^^^^^^^^^^
>
>The VM system, as you can see from the article, is focused on paging and
>caching the programs and program data. Is the cache for disk reads and
>writes thrown into the mix as well?
>
>
>
Yes - that is the real question. The following link :
http://www.freebsd.org/doc/en_US.ISO8859-1/books/arch-handbook/vm-cache.html
and the few "next" pages afterward talk about a unified buffer cache i.e
file buffer cache is part of the KVM system which is part of the VM
system - but this does not seem to preclude those vfs.*buf* variables
limiting the size of the file buffer cache... hmm ... so no real
decrease of confusion at this end.. :-)
Mark