To mandate RAM allocation in this way will take many people,
including myself, by surprise.
It's been this way on Fedora for over two years
(
https://fedoraproject.org/wiki/Features/tmp-on-tmpfs). Most other new
distributions do it, too. From that feature page, "Solaris has been
doing this since 1994. (Much like other Unixes, too.) Debian's next
release defaults to tmpfs on /tmp, too. ArchLinux defaults to this as
well. Ubuntu has plans for their 12.10 release." There's basically no
disagreement about it among the distributions.
50% of RAM is a *lot* of RAM, with serious performance impacts, and I
do not do this on my systems.
You know that it's not a static allocation, right? If you're only
using a few KB of /tmp, the file system is only consume a few KB. 50%
is just the absolute maximum that can be used, and it's a default
which can be controlled via mount option (or
/lib/systemd/system/tmp.mount Options=size=... with systemd).
I think you should do some investigation on how tmpfs works, and the
benefits of this configuration before jumping to incorrect
conclusions.
On Fri, Apr 25, 2014 at 12:51 PM, <benfell(a)parts-unknown.org> wrote:
Justin Brown writes:
> Complaints about this
> sort of thing are either a failure of the user or software developer
> to keep up to date on the file system standards.
My understanding was that file system hierarchy was supposed to be about how
files are arranged so that they would be consistent across distributions. It
should not be about whether we put file systems in RAM or on RAID or on any
particular medium.
To mandate RAM allocation in this way will take many people, including
myself, by surprise. For many users, 50% of RAM is a *lot* of RAM, with
serious performance impacts, and I do not do this on my systems.
--
David Benfell
See
https://parts-unknown.org/node/2 if you do not understand the
attachment.
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