Re: [PATCH 1/3] Zone reclaim V3: main patch

From: Andi Kleen <ak_at_suse.de>
Date: 2005-12-09 08:08:50
> Zone reclaim is enabled if the maximum distance to another node is higher
> than RECLAIM_DISTANCE, which may be defined by an arch. By default
> RECLAIM_DISTANCE is 20 meaning the distance to another node in the
> same component (enclosure or motherboard).

Sorry I made a mistake here earlier. On checking the ACPI spec
again it's valid to have distances < 20 (e.g. for a 1.5 NUMA factor
it would be legally 15) 

So better just check > LOCAL_DISTANCE, not >= 20.

Also a lot of Opteron BIOS get that wrong, but I'm adding some
sanity checking now so it should work in future.

-Andi
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Received on Fri Dec 09 08:09:24 2005

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