On 08/04/14 23:58, Christoph Lameter wrote:
The reason that zone reclaim is on by default is that off node accesses
are a big performance hit on large scale NUMA systems (like ScaleMP and
SGI). Zone reclaim was written *because* those system experienced severe
performance degradation.
On the tightly coupled 4 and 8 node systems there does not seem to
be a benefit from what I hear.
In principle, is this difference in distance something the kernel
could measure?
--
Cheers,
Jeremy
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