Re: [patch] slub: default min_partial to at least highest cpus per node

[Pekka Enberg]

David Rientjes wrote:
> On Tue, 7 Apr 2009, Pekka Enberg wrote:
>
> > > If you think that's acceptable, I'd be just as satisfied with that approach
> > > as long as all archs have valid cpu_to_node() mappings at the time of
> > > CPU_UP_PREPARE.
> > Well, that doesn't change the current behavior, so sure, I think it's
> > acceptable. And if the new defaults seem reasonable enough, we can probably
> > get rid of the tunable altogether.
>
> I'd like to remove MAX_PARTIAL and replace it with nr_cpu_ids.

Yeah, something more dynamic makes sense. But we probably need to do 
ilog2(nr_cpu_ids) or something; otherwise we will have very long partial 
lists on big iron machines (think 4096 cpus here).
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