On Mon, 4 Mar 2002, Andrea Arcangeli wrote:
> On Mon, Mar 04, 2002 at 10:46:54AM -0800, Martin J. Bligh wrote:
> > seems to me to be that the way we do current swap-out scanning is virtual,
> > not physical, and thus cannot be per zone => per node.
>
> actually if you do process bindings the pte should be all allocated
> local to the node if numa is enabled, and if there's no binding, no
> matter if you have rmap or not, the ptes can be spread across the whole
> system (just like the physical pages in the inactive/active lrus,
> because they're not per-node).
Think shared pages.
With -rmap you'll scan all the page table entries mapping
the pages on the current node, regardless of which node
the page tables live.
Without -rmap you'll need to scan all page table entries
in the system, not just the ones mapping pages on the
current node.
regards,
Rik
--
"Linux holds advantages over the single-vendor commercial OS"
-- Microsoft's "Competing with Linux" document
http://www.surriel.com/ http://distro.conectiva.com/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Mar 07 2002 - 21:00:36 EST