Re: [uml-devel] When /tmp is not tmpfs.

[Nix <nix@esperi.org.uk>]

On Fri, 25 Nov 2005, Rob Landley uttered the following:
> A) mlock would be a bad thing.  Not only is it a trivial DOS waiting to happen 
> but I like the UML physmem being swapped out under memory pressure.  I just 
> don't want uselessly writing it to disk over and over in the absence of any 
> memory pressure whatosever to consume all I/O bandwidth to no purpose, which 
> is the effect when it's not on tmpfs.

Maybe this is a stupid question, but... why do *any* systems other than
extremely memory-constrained ones not mount tmpfs on /tmp? It seems to
me to have numerous advantages and no disadvantages.

In fact, even when you're memory-constrained, if you *have* diskspace that
you could spend on /tmp, you can swap to it instead, and spend the space
on virtual memory when you're not spending it on /tmp.

So, er, why?

-- 
`Y'know, London's nice at this time of year. If you like your cities
 freezing cold and full of surly gits.' --- David Damerell



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