Ingo Molnar wrote:
Acked-by: Ingo Molnar <[email protected]>
note that no matter how much scheduler logic, in the end
cross-scheduling of tasks between nodes on NUMA will always have a
permanent penalty (i.e. the 'migration cost' is 'infinity' in the long
run), so the primary focus _hast to be_ on 'get it right initially' When
tasks must spill over to other nodes will always remain a special case.
So balance-on-fork/exec/[clone] definitely needs to be aware of the full
domain tree picture.
Yes, well put. I imagine this will only become more important as
there becomes more push towards multiprocessing machines, and the
need for higher memory bandwidth and lower latency to CPUs.
--
SUSE Labs, Novell Inc.
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