From owner-freebsd-hackers@FreeBSD.ORG  Thu Jan 24 19:26:08 2013
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> There are 3,236,316 files summing to 97,500,008,691 bytes.  That puts the
> "average" file at 30,127 bytes.  But for the full breakdown:

quite low. what do you store.

here is my real world production example of users mail as well as 
documents.


/dev/mirror/home1.eli      2788 1545  1243    55% 1941057 20981181    8%   /home