> 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,  <benf...@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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