Messages in this thread | | | Date | Mon, 4 Mar 2002 21:12:25 -0300 (BRT) | From | Rik van Riel <> | Subject | Re: 2.4.19pre1aa1 |
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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/
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