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

[Martin J. Bligh]

>> 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?

Thanks,

Martin.