On Sat, 17 Nov 2012, Gary Aitken wrote:
There was a nice Sun white paper by Peter Snyder on tmpfs. It's linked on the
Wikipedia tmpfs page, but Oracle has broken the link. Google has a rendered
version of a PostScript copy (long URL):
http://webcache.googleusercontent.com/search?q=cache:EXMeqvhFfrsJ:www.sun3arc.org/papers/OS/tmpfs_virtual_memory_filesystem.ps.gz+tmpfs+white+paper&cd=12&hl=en&ct=clnk&gl=us
Thanks.
Interesting, I would have thought swap space for something in a tmpfs was
not allocated until it needed to be swapped out. As I read it, used tmpfs
space reserves space in swap.
It uses VM, so tmpfs is a memory disk until you run low on memory, then
it gets swapped out. But until then, it's a RAM disk, with the added
benefit of not eating a fixed chunk of RAM all the time.
Oh, and unless you have a very recent -STABLE or -HEAD, see
http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/168544
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
