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SubjectRe: quicklists confuse meminfo
On Mon, Mar 10, 2008 at 05:19:32PM +0000, Hugh Dickins wrote:
> On Mon, 10 Mar 2008, Andi Kleen wrote:
> > Christoph Lameter <clameter@sgi.com> writes:
> > >
> > > Zeroed pages however will not address the issue of having initialized pgd
> > > (which seems to be what i386 needs).
> >
> > pgd is tiny on i386 PAE (4 * 16 bytes). Are you sure reinitializing that
> > is a serious issue? ...
>
> It used to be tiny (32 aligned bytes), then 2.6.22's quicklist enlarged
> that to a whole (lowmem) page. I think we were all too busy with other
> stuff to protest loudly enough about that bloat.

Interesting; I missed.

Hmm, that might have been for Xen or Vmware too (which like some structures
be page aligned) But I agree it is bloat in general.

-Andi


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