Re: lowmem_reserve question

[Mike Galbraith]

On Mon, 2006-04-03 at 14:48 +1000, Con Kolivas wrote:
> On Monday 03 April 2006 14:42, Mike Galbraith wrote:
> > On Mon, 2006-04-03 at 12:48 +1000, Con Kolivas wrote:
> > > Furthermore, now that we have the option of up to 3GB lowmem split on
> > > 32bit we can have a default lowmem_reserve of almost 12MB (if I'm reading
> > > it right) which seems very tight with only 16MB of ZONE_DMA.
> >
> > I haven't crawled around in the vm for ages, but I think that's only
> > 16MB if you support antique cards.
> 
> That's what the ram is used for, but that is all the ZONE_DMA 32bit machines 
> get, whether you use it for that purpose or not. My concern is that this will 
> have all sorts of effects on the balancing since it will always appear almost 
> full.

If that dinky 16MB zone still exists, and always appears nearly full, be
happy.  It used to be a real PITA.

	-Mike

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