Lazy NUMA sorting?
From: Timothy Miller
Date: Thu Apr 15 2004 - 16:14:57 EST
So, I understand that the 2.6 SMP balancer redistributes workload on a
periodic basis. Once every second or something, it migrates processes.
A NUMA system would have to do something similar, where if there is a
page which is referenced by only one process, and the page is located on
the "wrong" node, it could be migrated. This could be done gradually by
a periodic background process. Is this already how it works?
Also, if a page is being referenced by multiple nodes, the same
background process could make mirror copies. (Age of page would be an
important consideration here so moves don't happen for short-lived pages.)
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