Re: Whining about NUMA. :) [Was whining about 2.5...]

From: Martin J. Bligh (
Date: Mon Oct 08 2001 - 12:57:47 EST

>> So would a workable (if naieve) attempt to use Andrea's
>> memory-zones-grouped-into-classes approach on NUMA just involve making a
>> class/zone list for each node? (Okay, you've got to identify nodes, and
>> group together processors, bridges, DMAable devices, etc, but it seems like
>> that has to be done anyway, class/zone or not.) How does what people want to
>> do for NUMA improve on that?
> I fear it becomes an N! problem.
> I'd like to hear what Andrea has planned since without docs its hard to
> speculate on how the 2.4.10 vm works anyway

Can you describe why it's N! ? Are you talking about the worst possible case,
or a two level local / non-local problem?



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