Messages in this thread | | | Date | Mon, 10 Mar 2008 18:25:33 +0100 | From | Andi Kleen <> | Subject | Re: 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
| |