In an earlier post Matt explains the features of tmpfs
From http://readlist.com/lists/lists.drag...rs/1/8600.html:
Quote:
Subject: tmpfs now operational in development branch
Group: Dragonflybsd-users
From: Matthew Dillon
Date: 16 Feb 2010
We now have a very nice port by Naoya Sugioka of TMPFS from NetBSD
in our main development branch. It is brand new and still considered
experimental but should be reasonably stable.
TMPFS is a better alternative to MFS and MD for temporary filesystems.
It doesn't have the data duplication issue that MFS has and its data
is swap-backed using a very nice algorithm that only pages data to swap
when the system is under real memory pressure (and not due to buffer
cache flushes, fsyncs, or anything else).
-Matt
Matthew Dillon
<dillon>
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