Re: [RFC PATCH 14/23 V2] slub, hotplug: ignore unrelated node's hot-adding and hot-removing

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On 08/03/2012 12:04 AM, Christoph Lameter wrote:
> On Thu, 2 Aug 2012, Lai Jiangshan wrote:
> 
>> SLUB only fucus on the nodes which has normal memory, so ignore the other
>> node's hot-adding and hot-removing.
> 
> You would need to do the same for SLAB. SLAB has an easier time with
> falling back to other nodes (and therefore does not show up in your
> tests) but as a result SLAB will be quite ineffective
> because it created bogus structures that are never used yet constantly
> traversed.
> 
> 

Because SLAB creates bogus structures, so it can care less things when in hotplug.
It is just ugly but it is not bug currently, so I want to delay to fix it.
And SLAB is not so friendly with hot-remove as SLUB in my view, we can fix it altogether in future.

Thanks,
Lai
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