Messages in this thread | | | Date | Thu, 12 Sep 2013 14:16:58 +0000 | From | Christoph Lameter <> | Subject | Re: [RFC][PATCH] mm: percpu pages: up batch size to fix arithmetic?? errror |
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On Wed, 11 Sep 2013, Dave Hansen wrote:
> 3. We want ->high to approximate the size of the cache which is > private to a given cpu. But, that's complicated by the L3 caches > and hyperthreading today.
well lets keep it well below that. There are other caches (slab related f.e.) that are also in constant use.
> I'll take one of my big systems and run it with some various ->high > settings and see if it makes any difference.
Do you actually see contention issues on the locks? I think we have a tendency to batch too much in too many caches.
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