Some ideas for FreeBSD

[millueradfa at yahoo.com]

--- Jerry McAllister <jerrymc at msu.edu> wrote:

> On Thu, Feb 07, 2008 at 04:09:13PM -0800, Jason C.
> Wells wrote:
> 
> > Heiko Wundram (Beenic) wrote:
> > >Am Donnerstag, 7. Februar 2008 07:32:16 schrieb
> Jason C. Wells:
> > >>Norberto Meijome wrote:
> > >>>But I agree with Wojciech..do you really want
> to use swap files?
> > >>One could mount an md filesystem and then use
> that as swap.  That way
> > >>you wouldn't need to use any disc space.  As a
> plus, the performance
> > >>would be way better than disc.
> > >
> > >Ahem, sorry, that's just plain stupid. Either the
> md system is backed up 
> > >by RAM (in which case you don't need the swap
> anyway; why'd you want to 
> > >access RAM by putting it in a swap on an md in
> RAM?), or it's backed up by 
> > >swap, in which case you have a chicken and egg
> problem.
> > 
> > Mmm, yes. That is quite a pickle.  But a chicken
> or an egg would still 
> > be inferior to an md backed swap. :)
> 
> Huh?
> md backed swap is just using memory which, if you
> hadn't wasted it 
> by making it md, it might obviate the need for swap
> at all - anyway
> it would not be a faster system if the md had to be
> swapped out.  It
> just adds another layer of interferrence.
> 
> ////jerry
> 
> > 
> > Regards,
> > Jason
> > 
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> 


Well, actually, these are file backed swap devices.
You can do both file and memory backed devices. this
allows you to have a swap file on the hard disk and
mount it. 



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