Messages in this thread | | | Date | Mon, 26 Sep 2011 10:24:59 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 4/5] mm: Only IPI CPUs to drain local pages if they exist |
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On Mon, 26 Sep 2011, Gilad Ben-Yossef wrote:
> I do not know if these scenarios warrant the additional overhead, > certainly not in all situations. Maybe the right thing is to make it a > config option dependent. As I stated in the patch description, that is > one of the thing I'm interested in feedback on.
The flushing of the per cpu pages only done when kmem_cache_shrink() is run or when a slab cache is closed. And for diagnostics. So its rare and not performance critical.
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